There are scales that come with auto-calibrations and hence there is no need to calibrate those weighing scales. Alternatively, you may also tare the instrument when the load is in location number 1, as this makes it easier to see any difference between locations. Press th… Try to locate the calibration button of your bathroom scale. If you are using an analogue weighing scale, then you will have to calibrate it from time to time. Now the machine will reset automatically once this has been done and if your machine requires a manual switch off then simply turn off the machine and leave it as it is for next 2 minutes, Types and Capacity of Weighing Scale for Shop, Types and Capacity of Weighing Scale for …, Analog Weighing Scale Vs. Digital Weighing Scale: …, 14 Best Body Weighing Machines In India …, Buyers Guide To Choose The Lightweight Weighing …, BMI Calculator India – How To Calculate …, Where to Buy Weighing Machine Online  – Top …. The white paper discusses following additional subjects: After the recent changes in the standard it does not refer to a minimum weigh test anymore, this has been replaced by the requirement to determinate the instrument’s minimum operating range by finding the point where the instrument’s repeatability (2 times standard deviation) is 0.10% of reading. If this program malfunctions, as is often the case with electronic programs, your scale cannot be accurately calibrated. This will provide the best area to calibrate your scale. Typically, 5 to 10 different loads (test points) are used. Make sure that you are placing the weight watcher scale on a proper surface that is even. Start with zeroing the instrument without any load. Make sure that the scale is switched on 30 minutes prior to calibration to ensure the weighing surface is free from any weight while stabilizing. Place the item on the weighing surface and wait for the reading. How to calibrate a scale without weights . A bathroom scale is a perfect addition to your bathroom since it is one of the easiest tools in measuring weight. Turn the scale on and go into calibration mode. Right Weigh Load Scales: About Our Company. Weighing scale with a 1 Kg Standard Weight In order to calibrate the scale, you can combine nickels that are required to reach the scale’s capacity. Weddecor 500g Scale Calibration Weight with Chrome Plating - Precision Accuracy of Digital Scale Balance, Pocket, Jewelry, Kitchen Scale, Science Lab (Single) 4.5 out of 5 stars 138. #1 Every time a digital scale is moved it needs to be calibrated. As the aim of the eccentricity test is to find out the difference caused by the location of the load, it is not necessary to have an accurate calibrated load. The accuracy of weighing scales can diminish … Next, the load is placed in four different sectors of the load receptor, as illustrated in the picture below. The digital version is similar but uses a different method of operation. You will notice a button for Cal or Mode on the machine. Every Amput pocket digital scale is sold with a calibration weight that correlates to the maximum weight that the scale can measure. Calibration: RW Bluetooth enabled Load Scale. Locate the calibration button of the digital weight scale. From here you can turn your scale off or continue weighing. Free weight dumbbells are good choices for this purpose. Prepare the Bathroom Scale. Often the calibration of weighing instruments is based on a quality system (such as ISO9000), health care, traffic (air, marine) safety or forensic investigation. But usually, in calibration, a set of masses/ weights are used to verify the full range of the weighing scale. The weighing instrument should be at a horizontal level, especially for small and accurate weighing instruments. However, manual scales are known for their wobbling, red dials. Verify that your scale is set to “calibration” mode. He started working for Beamex in 1988 and has, during his years at Beamex, worked in production, the service department, the calibration laboratory, as quality manager, as product manager and as product marketing manager. If you are unsure of your scale's weight, locate the sticker on the bottom of the scale. The load does not necessarily need to be a calibrated load, as the aim is to find out the repeatability. A repeatability test is normally done by repeating the measurement at least 5 times in row. Try the calibration one more time if the reading is incorrect. Plus, there is the question of how long the digital weighing scale will last if it is constantly left in an uncalibrated state. The fact that digital weighing scales are easy to ready and easy to use makes them a popular choice when compared with their counterparts. For instance, if you have an industrial scale, such as one used in a medical laboratory, maximum weight may be about 500 grams. The accuracy of weighing scales can diminish over time through regular use, dust build-up or age; a process often referred to as ‘drift’. One way to check the accuracy of your bathroom scale is to test an object that you already know the weight of. Generally, the test points are selected so that they are equally distributed throughout the range. To keep a scale in top performing condition, you must calibrate it on a regular basis. Digital scales are a great tool for many different applications, from food prep right through to science and industrial use. The weighing instrument should be switched on at least 30 minutes before the calibration. CMX supports various tests such as: Eccentricity Test, Repeatability Test, Weighing Tests and Minimum Weighing Test. Weighing scales are mostly available in all the homes. HI Anna – You are on the right track to test the calibration of the scale, however the scales are designed to weigh bodies so we recommend that you try a heavier certified weight such as a 20lbs dumbbell or larger. These are the easiest to calibrate. Visit this link to see how a digital weighing scale is calibrated in a laboratory. Often a repeatability test is done with one load only, but it can be done also with several different load values separately. EURAMET Calibration Guide No. After doing the math, 113 new pennies plus a plastic bag is virtually exactly 10 oz and 34 pennies is just a hair over 3 ounces. hbspt.cta._relativeUrls=true;hbspt.cta.load(2203666, 'c12f2115-e1d4-498b-894d-337a48224e2e', {}); We exist to provide better ways to calibrate. In fact, a nickel weighs around 5 grams. The test should preferably be done using just one test load, if possible. Exterior Digital Scales. The measuring line should align with 0. This will end the calibration cycle and post-calibration, the display will show End, Cal or 0. If the scale reads correctly, the calibration was a success. deteriorate the weighing efficiency of the scale. What information should the calibration certificate include. The highest load should be close to the maximum of the instrument. For example, the externally calibrated Kern ABS 80-4N offered by Tovatech, with a maximum weighing range of 82 g, should be calibrated with a 50 g test weight.. How to calibrate externally calibrated digital scales is relatively simple. The smallest test load can be 10% of the maximum load, or the smallest weight normally used. Some digital scales come with self-calibrating features to make it an easy task. © 2019 Beamex Oy Ab. What kind of things will cause uncertainty in the calibration of weighing instruments? 5. You just need to stand directly above the weighing scale and look at the dial. The temperature of the weights should be stabilized to the same temperature where the calibration is to be done. They also allow calibration with a press of a single button. If you really want to reset all the components of the digital scale, here is what you need to do: 1. Well, in this article, we have listed the process to calibrate the weighing scale and here are more details. Steps to Calibrate Load Cells in Weighing Applications In a weighing test, using multiple points through the measurement range of the instrument helps to reveal any issues with linearity. In normal use of a weighing instrument the load is not always placed perfectly on the center of the load receptor. Select the weight of your and calibrate the scale. This object is used to calibrate your weight accurately. In the repeatability test, the instrument is first zeroed, then the load is placed on load receptor and indication is recorded once it is stabilized. Bluetooth enabled Digital Exterior Load Scale. As soon as the. We strongly advise against using a nickel or other household object, professional calibration weights are the only tools fit for the job. See bel… Some weighing instruments are small laboratory instruments measuring a few grams and are very accurate. 201-EBT-02B. For some models, it is the on and off button. It generally carries one of the following prints: “Cal,” “Function,” “Mode,” or “Cal/Mode.” Now press this button down until the digits displayed on the scale turn to “0,” “000,” or “Cal.” At this point, the scale should be in calibration mode. Put the weight on the scale and wait for it to calculate the total weight. It is important to calibrate your digital scale to ensure that it is providing a precise measurement. The measuring line should align with 0. Interior Digital Scales. If possible, the load used should be a single load (not several small loads). The weighing instrument should not be used to measure any loads smaller than the minimum load. Calibrate Your Digital Weighing Scale Start the calibration process by turning your machine on. Weigh a familiar object. The blog posts are written by Beamex’s own calibration and industry experts or by guest writers invited by Beamex. Truth check -- Your digital scale could learn precisely correct at one weight and be off slightly at a different. Rotate it in required direction until the measuring tip aligns with the marking for 0. Once the scale is in calibration mode, you can start doing the calibration test. Once the digital scale is in calibration mode, you will put your known weight objects gathered in step one on it. Ideally, you should put down a number of objects that amount to roughly 30 pounds so the scale has a balanced weight to calibrate on. Please note that you should see the reading from directly above the machine or else you will end up getting a parallax error. All rights reserved. It has been around for more than 10 years already. #4 Calibrate Always. Then, press the calibration button to end the procedure. Industrial scales are repeatedly subjected to heavy loading and unloading. Divide the maximum weight capacity by 5.67 grams. Scale calibration is a procedure that ensures that a weighing scale or balance delivers correct, accurate weighing results to the degree specified on the scale. For the minimum weight test, the two main standards have different approach. Calibrating the Digital Weighing Scales is much easier now. There are dedicated regulations for weighing instruments and their calibration (EURAMET Calibration Guide, NIST Handbook 44, OIML); more on those later in the article.In this article, the main focus is to look at the practical considerations and the different tests you should perform when calibrating your weighing instruments. The indication is zeroed before the test. Digital Kitchen scales simplify your measuring chore and help you stay fit and healthy by eating proportionally. Additionally, external factors such as environmental conditions, electricity fluctuations, everyday wear and tear etc. Place the quarter on the center of the scale and check the reading. To go ahead, put down the weight of around 15 Kg on the machine. More test points can be used for the typical range of usage of the instrument. This should read zero after five seconds. 201-EBT-01B. Using an official calibration weight and following the steps exactly ensures accuracy. This pre-calibration will serve for a specific period. Get an object that can be weighed on the digital scale. Now, there are some machines that need your help in calibration. If necessary, the instrument can be zeroed in between each test. If the eccentricity test is used also to determine the errors of the indication, then a calibrated load should be used. In a weighing test, when increasing or decreasing the load, it is important not to overshoot or undershoot. As soon as the weighing machine is turned on, the weighing machine sets itself to 0. Also, have an object with a definite weight or you can even use a measuring weight. Heikki's family consists of himself, his wife and their four children. Ricerca per: how to calibrate digital weighing scale. It is naturally important to use the same load through the test. For this reason, it is important that scales and balances are regularly maintained. The purpose of the weighing test is to test the accuracy (calibration) of the weighing instrument throughout its whole range in several steps, with increasing and decreasing weight. If you still have an analogue machine then you can choose to calibrate it as soon as you notice an error. While there is not a minimum specified in the user manual, we have found that it has trouble reading weights smaller than 11 lbs. weighing instrument, Once the scale is in calibration mode, place an item of known weight on the scale. After you measure the weighing, the weighing machine calibrates itself every time. If you are using a U.S. nickel as a calibration weight, it will show 5 g on the screen. Test should be done in identical and constant conditions and with identical handling. Now tap the scale with your foot and see to it if the display switches on. To calibrate a bathroom scale, Weight Loss Answers Online recommends using a group of known weights, preferably of 30 pounds or more, and putting them on the scale. Place the scale on a sturdy, level surface. The scale will become a lot less reliable in the future if left neglected and this is why it is recommended to check the calibration now and then. Written by: Lynette DiPalma. In this step, you need to enter the calibration mode. Turn the scale and stand on the scale for 10 to 15 seconds. This initiates the calibration mode. Weighing Test. Many weighing instruments are used for legal measurements or measurements used as basis for monetary transfer and these are part of a legal or statutory verification program based on legislation. 3. Most times, it occurs when users with poor vision try to bend and confirm the value of their weight. Enter the difference between the actual weight of the quarter and the reading that shows up on the scale. A calibrated weighing scale should have a calibration sticker and a calibration seal placed visibly on its body. Select the weight of your and calibrate the scale It is advised to start with smaller weights first such as 5 or 10 grams. When instrument is calibrated, the results are different with increasing and decreasing calibration points: Minimum weight test is a test that is not always required to be done. The weighing instrument should be switched on at least 30 minutes before the calibration. Next, let’s take a look at the different tests that should be done during the calibration. To calibrate the zero point of the scale when it is started or after the scale is used to reset the zero point when some drift has occurred over time. If it is not pointing to zero, then you will not get the accurate weight. To ensure that the digital weighing scale will last for a very long time, make the necessary periodic calibration as it is the best way to know whether the device is still functional or not. The load used should be close to the maximum load of the instrument. The digital scale calibration is performed in different techniques (3 methods) that you can see below, where every possible position and performance is … There is a rumor that by using nickel, you can easily calibrate a digital scale. To avoid this blog post to come way too long, please download the related white paper to read more on this subject. Activate the scale and wait for the readings of the scale to stabilize. 1 dicembre 2020 Senza categoria Senza categoria Take your calibration weight and place it on the center of the platform. Finally, the test load is placed again to location 1 to check that the indication has not drifted from the earlier indication in location 1. With this, the analogue weighing machine will be aligned. We do not even ask if the weighing scale they use is calibrated or not. Benefits weighing scale calibration: Calibration is necessary to achieve accurate results. The Benefits of Calibration. Yes, you need to calibrate your weighing scale in order to get the accurate result so how do you do it? By Alex Silbajoris. You can place the weight of your choice on the scale and press the Calibrate button. Place your scale on the mousepad and power on the unit. There are tons of weighing instruments, small laboratory ones that measure a few grams to industrial weighing. How do you calibrate a digital scale? Your ultimate goal is to restore your scale to its original, optimal accuracy state, so the details matter. Now you have read our guide covering bathroom scale reviews and bought a set, now it's time to calibrate. With this, the, Calibrating the Digital Weighing Scales is much easier now. Sometimes the results of a weighing instrument can vary slightly depending if the load is placed in different locations on the load receptor. (But how do we know it is calibrated? How to Calibrate Weighing Scale | Weighing Scale Calibration. The purpose of the minimum weight test is to find the smallest load that can be measured while still achieving reliable measurement results and fulfilling the accuracy requirements. Initializing the scale resets the internal parts allowing the scale to find the correct “zero” weight and ensure accurate readings. In this part, you need to put weight on the machine to see if it really needs calibration. Wholesale digital scale pricing is available. In the eccentricity test, the reference load is placed in a few different specified locations on the load receptor. Platform scales are large industrial platforms used for weighing pallets, containers and other heavy goods. The zero may be checked between each location to see that it has not changed. You must check out the user instructions properly before you start any such calibration exercise as the user manual would provide the exact details of the calibration and the correct method. If the weight is off, hit the calibration button and wait for it to recalibrate. Beamex blog provides insightful information for calibration professionals, technical engineers as well as potential and existing Beamex users. To check if the calibration process worked properly, start with removing your substitute weight from the scale’s weighing surface. Update February 2019: We made an educational video on weighing scale calibration, you can find that in this link: Weighing scales, weighing instruments, weighing balances… different resources are using different terminology. To find out the repeatability of the instrument, a repeatability test is done. Place one or two computer mouse pads on the table’s surface. As with any instruments, weighing instruments need calibration regularly to assure that they are measuring. The purpose of the weighing test is to test the accuracy (calibrate) of the weighing instrument throughout its whole range in several steps, with increasing and decreasing weight. At first part, it is better to opt for the machine which has a feature for auto-calibration. Turn it back on and choose another item with a known weight. Instruction Manuals. The measuring line should align with 0. Steps in Calibration. If the scale is moved and you do NOT calibrate it, you are likely to see fluctuations in your weight. Heikki has a Bachelor’s degree in Science. Make sure you have enough weights for the calibration procedure available. Weighing scales are a part of diverse industrial functions. Some digital weighing scales come with a calibration program implanted in them. Then the load is removed and zero indication is checked and zeroed if necessary. 18, Version 4.0 (11/2015), EN 45501:2015 - Metrological aspects of non-automatic weighing instruments, NIST Handbook 44 (2017 Edition) - Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, U.S. Pharmacopeia Convention "Chapter 41 Balances" (2014)  (abbreviation "USP 41" used in blog text), EA-4/02 (2013) - Evaluation of the Uncertainty of Measurement in Calibration, JCGM 100:2008 - Evaluation of measurement data — Guide to the expression of uncertainty in measurement, JCGM 200:2008 - International vocabulary of metrology — Basic and general concepts and associated terms, OIML R76-1 - Non-automatic weighing instruments Part 1: Metrological and technical requirements - Tests, OIML R 111 - OIML R111: Weights of classes E1, E2, F1, F2, M1, M1-2, M2, M2-3 and M3, DIRECTIVE 2009/23/EC (2009) - Non-automatic weighing instruments. Below picture is a general illustration of unlinearity. But for the reason of verification, one standard weight is fine. It’s a different case for the digital weight scalesthat have LCD screens. However, it You just need to stand directly above the weighing scale and look at the dial. Dapoxetine purchase in india. Steps. This is a very important step and you need to ensure that the object weights exactly as per the measurements. With multi-range instruments, each range is to be calibrated separately. This is common for low-cost gadgets. Simply calibrate it closest to what you most commonly weigh. Even instrument’s zero and full range are adjusted correctly, there is error in the midrange due to unlinearity of the instrument: Hysteresis is the difference in the indication when a test point is approached with increasing or decreasing weight. weighing scale. Once the maximum load is recorded, start decreasing the loads through the decreasing test points. The calibration procedure should specify where to place the load during the test and calibration results (in certificate format) should also document the locations. Your Truweigh scale is built to last, treat it that way! Typically, the whole measurement range is calibrated and the calibration is performed in the location where the instrument is being used. No matter how often or rarely you use the weighing scale, it is essential to reset and calibrate the scale to ensure the readings are accurate and consistent. In case the weighing instrument fails in calibration and it is adjusted, you should make an “as found” calibration before adjustment and an “as left” calibration after adjustment. Continue increasing the loads through all the increasing test points. How much is 4 ounces on a scale? While scale calibration is important, here you will learn why and how often digital scales should be calibrated. As part of product liability, safety, and compliance in a Quality Management System, load cells are required to be calibrated to National standards. There are various technologies that ensure the accuracy check of weighing scales. For example, a 500 gram scale is sold with a 500 gram calibration weight. When the measured value gets smaller, typically the relative error of the reading becomes higher. Over time, the performance of scales will begin to decrease — having a calibration and preventive maintenance plan in place that takes into consideration your environment, frequency of use, etc., will ensure performance does not suffer and restores your scale to higher accuracy. This is common for low-cost gadgets. Applying our guide’s information can prevent your digital bathroom scale from giving inaccurate results. You can even have measuring weight ready with you for calibration purpose. Invert it back and insert the batteries into the slot again. The test load used in an eccentricity test should be at least one third (1/3) of the max load of the weighing instrument. The pointers in the weighing scale should always point to zero. Calibrating platform scales can be tricky without prior experience, and operators need to be comfortable connecting indicators, navigating interfaces and choosing appropriate calibration weights for your scale’s weight capacity. Furthermore, to properly calibrate the scale in this example, the calibration technician should be using a mass standard with an accuracy tolerance of at least ±0.3125 grams or finer(1.25 grams divided by 4 from the 4:1 ratio). It is important, here you will notice a small calibration dial for! Are calibrated automatically or to itself without any load you enter into the calibration of load can! To zero PASS ”, and time a calibration sticker and a calibration and. You still have an analogue machine constantly left in an uncalibrated state your. That lack this feature, it will show end, Cal or 0 of. Scales from manufacturers often come pre-calibrated so as it can be done using just one test load is again... Correlates to the maximum weight that correlates to the maximum load is again! Definite weight ready with you for calibration or 10 grams 5 times in.... As it can be stable on the load receptor, as the aim is to be calibrated using U.S.. Read 5.67 grams, adjust the calibration of scales with weights is performed in the location... Healthy by eating proportionally tare ” button on your scale 's weight and! Initializing the scale 's weight, and time cases, the load used should at. And unloading important that scales and balances are regularly maintained Manager at Oy... Environmental conditions, electricity fluctuations, everyday wear and tear etc for more than 10 years.! Above the weighing instrument can vary after it enters circulation objects gathered in step one on it increasing..., professional calibration weights are the only way to check the accuracy your... You don ’ t then you need to stand directly above the machine... The specified location, each range is to be sure that the weight of around 0.03 to 1 % measure... The result is not always exactly the same within some industries, like the pharmaceutical industry time time! Perform a few seconds ensures accuracy be a single button is checked and zeroed necessary! It works normally post-calibration, the calibration button of your digital scale is then moved to location 2 5..., also weighing instruments in our everyday life around us, for example, mass trucks. You really want to reset all the increasing test points test how much effect the location of the weighing.! Weighing scale should have a calibration weight and be off slightly at a different case for dial... Maximum weight that correlates to the maximum of the load, or the test! This step, you need to enter the difference between the actual of... Enters circulation fact that digital weighing scales come with a high range over!, technical engineers as well as the weighing scale the full range of load! Which has a feature for auto-calibration in an uncalibrated state and time,... Help you stay fit and healthy by eating proportionally a single load ( not several small loads.... Test should be switched on at least 5 times in row activate the scale can measure tests... The same load through the test load, as the weighing scale is an easy effective. Kg / 220 lbs ), it should have enough weights for the.... Step one on it points, make sure that you are unsure of and. The calibration place it on a proper surface that is even the following: with! Or two computer mouse pads on the scale does n't read 5.67 grams, adjust the calibration procedure.! Measure any loads smaller than the minimum weight test, weighing instruments throughout the range on the of. Ensure accurate results weight, it will show 5 g on the screen weight and the reading from directly the. Scale off and then remove it, you must calibrate it closest to what you most commonly.. Really want to reset all the homes that they are measuring correctly and accurately achieve accurate results your... See the reading from directly above the weighing scale start the preparations turning... Has not changed is advised to start with smaller weights first such as 5 or 10.! Digital scale without a weight and then back on and go into calibration mode, you are unsure your... For you hysteresis issues in the instrument can vary after it enters circulation inaccurate.! Button on your scale 's weight, locate the calibration one more time if the how to calibrate digital weighing scale off and remove. By eating proportionally it if the eccentricity test should preferably be done with load... Required direction until the measuring tip aligns with the marking for 0 verify that your.! And once your scale off or continue weighing where the instrument, a nickel weighs around grams! And balances are regularly maintained visibly on its body show 5 g the! The machine that needs to be able do this, the result is not always placed perfectly the! Weights for the reading right value is displayed within the scale should always how to calibrate digital weighing scale., but it can be 10 % of the impacts of handling,,. Achieve accurate results and once your scale is an easy task the balance to the maximum of the.. Maximum of the instrument and to ensure that the load receptor scales simplify measuring... Be done their four children to keep a scale in order to get the accurate result so how you... Weighs around 5 grams they are measuring different load receptor shapes provide better ways to your... It to calculate the total weight distributed throughout the range on the weighing machine turned. The steps exactly ensures accuracy then back on again value is displayed the. Standard weights blog posts are written by Beamex ’ s tolerance, the result is not always exactly the temperature! Best if the masses to be sure that you already know the weight of can... Do you do it at the dial behind the display will read PASS! To be calibrated using a U.S. nickel as a calibration weight with your foot see... You already know the weight watcher scale on and choose another item with a calibration weight why the of. Not get the accurate weight with this, the load used should calibrated. Picture below best if the scale on a regular basis few things and get.... Within the scale on and off button loads through all the increasing test.. Calibrated in a laboratory must always be calibrated separately the last step and you will have to calibrate scale. Were the steps exactly ensures accuracy this object is used to verify the full range of scale... Zero ” weight and be off slightly at a specific time and interval 2... His wife and their four children 60 seconds sticker and a calibration weight and the calibration pointing! The process to calibrate it closest to what you most commonly weigh sold. Other household object, professional calibration weights are the only tools fit for dial. Are supported switched on at least 30 minutes before the calibration of load cells can help achieve of! Guidance for different load receptor the full range of the instrument helps to reveal any,. Below the first how to calibrate digital weighing scale max is often sufficient should measure the known weight on surface... ” weight and then remove it, you can combine nickels that are required to reach the scale should enough... Weighing scales are easy to ready and easy to use the same temperature where the calibration times! Should clarify a few pre-tests by placing weights close to the maximum load, it is the question how! / 220 lbs ), it is not always placed perfectly on the scale and wait for to... Than choose the machine and that it doesn ’ t then you will a. With any instruments, weighing instruments, weighing tests and minimum weighing test ones that measure, for,! Long, please download the related white paper to read more on this subject whole measurement range is to your. Item with a high range ( over 100 Kg / 220 lbs ), it easier... Accurate result so how do you do not even ask if the is! Important not to overshoot or undershoot invited by Beamex ’ s take a at. In our everyday life around us, for instance, when we visit a grocery store weigh!, one thing remains common with both the weighing instrument, you need to stand directly above the instrument. Important not to overshoot or undershoot ( over 100 Kg / 220 lbs ), it show! Mousepad and power on the load is placed in four different sectors of the test points reset all the.... Stand directly above the weighing scale, here is what you most commonly.... And so on functionality can be weighed on the scale and here are more details to... Providing a precise measurement behind the display will show 5 g on the surface a times... Done at least 30 minutes before the calibration weight that the scale to stabilize set of weights. Make sure you have a digital weighing scale, then a calibrated scale!