Reference Calibration Weights and Mass Standards Adjusted to Troemner UltraClass Tolerances
ASTM Individual Reference Calibration Weights
| ASTM Class | UltraClass; Troemner UltraClass |
| Internal Calibration Certificate | ISO/IEC 17025 Accredited Certificate |
| Construction | Two-piece |
| Density at 20°C | 7.95 g/cm3 |
| Design | Cylindrical |
| Dimensions | 2.5 in x 2 in (6.35 cm x 5.08 cm) (HxØ) |
| Protective Case | Included |
| Weight Material | 316 Stainless Steel |
| Weight Tolerance | 0.19 mg |
| Weight Value | 150 g |
| Wgt Origin (USA) | USA |