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One of the most common questions we get related to calibrating scales is "what calibration weight do I need?" There is much to unpack with this question and varies greatly depending on the user's application. Most people know how much weight is required to properly calibrate their scale, but many are unsure of what class is needed or why they matter. Calibration weights, also referred to as mass standards, are assigned a class based on their accuracy or tolerance. These tolerances are

It's official. What has been the physical definition of the kilogram (kg) for over 130 years, "Le Grand K" will be retired on May 20th, 2019. This decision was made on November 16th, 2018 by researchers from the  Bureau of Internation Weights and Measures at the 26th General Conference on Weights and Measures (CGPM) in Versaille, France. This change in definition will forever change the way we measure mass, at least for the foreseeable future. What is Le Grand K?  Know