UltraClass
The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.01 mg.
- Weights are supplied in high quality polycarbonate case with red insert
- Two-piece construction
- Manufactured in the USA