| Calibrated Device | Gauge Blocks |
|---|---|
| Range | 0.5 mm to 100 mm in grade 0 or above |
| Uncertainty |
Steel gauge block: [392 + (0.6L)2]1/2 nm
Ceramic gauge block: [382 + (0.7L)2]1/2 nm Chromium carbide gauge block: [392 + (0.9L)2]1/2 nm Tungsten carbide gauge block: [392 + (1.9L)2]1/2 nm L: length of gauge block in mm |