What does the standard weight E2 mean?E2 standard weights are the first-class weights in the class of weights, and their grades belong to the higher grades, and are commonly used in the calibration and testing of high-precision balances such as one-hundredthousandth, one-tenth, one-thousandth, etc.S

Operation procedure for daily verification of M2 weights1. PurposeTo ensure the accurate and consistent transmission of measurement values, strengthen the verification and management of measurement and testing equipment, correctly implement the national measurement verification regulations, and use

Classification of weights——1. According to the new weight verification regulation JJG99-20062. The weights are divided into grades: 9 grades: E1, E2, F1, F2, M1, M12, M2, M23, and M3.3. The grade is divided according to the uncertainty, that is, the equal weight has a correction value, and the grade