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…

Troemner Alloy 8 Stainless Steel Precision Metric Weights are available in Troemner UltraClass, and ANSI/ASTM E617 Classes 0, 1, 2, 3 and 4. Troemner Alloy 8 Stainless Steel Precision Avoirdupois Weights are available in ANSI/ASTM E617 Classes 1, 2, 3, and 4. ANSI/ASTM Class weights meet or exceed…