https://www.troemner.com/Classes/1_4
AdHigh Quality Stainless Steel Laboratory Weights for Scale and Balance Calibration. Calibration Weight Sets Adjusted To Meet Or Exceed ASTM Class 1-4 Tolerances.
OIML Weights · Shop Today · Shop Weights 24/7 Online · NIST Class F Weights
Types: Calibration Weights, Test Weights, Certified Weights, Weight Sets, Scale Weights