GAGE BLOCK TECHNICAL INFORMATION
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Basics of...Gage Block Specifications
Certificate and Serial Number
- It is an absolute necessity that each gage block carries its own Serial Number for calibration purposes and, to determine the actual size to the closest millionth of an inch
- A Certificate of Accuracy, traceable to NIST, is normally furnished with each gage block set and individual gage block (unless otherwise noted)
| Deviation in Millionths of an Inch | ||||||||||||
| Nominal | New | Old | New | Old | New | Old | New | Old | New | |||
| N < 0.05 | ±12 | ±2 | ±4 | | | ±6 | +8 | | ±12 | +10 | | ±24 |
| 0.05 < N < 0.4 | ±10 | ±2 | ±3 | | | ±5 | +8 | | ±8 | +10 | | ±18 |
| 0.4 < N < 1 | ±12 | ±2 | ±3 | | | ±6 | +8 | | ±12 | +10 | | ±24 |
| 1 < N < 2 | ±16 | ±4 | ±4 | | | ±8 | +16 | | ±16 | +20 | | ±32 |
| 2 < N < 3 | ±20 | ±5 | ±5 | | | ±10 | +20 | | ±20 | +30 | | ±40 |
| 3 < N < 4 | ±24 | ±6 | ±6 | | | ±12 | +24 | | ±24 | +40 | | ±48 |
| 4 < N < 5 | ±32 | ±7 | ±8 | | | ±16 | +28 | | ±32 | +50 | | ±64 |