Calibration Procedures and
Type of Instruments/Materials
to be calibrated |
Range |
Expanded Uncertainty*
(Level of Confidence
Approximately 95%)
(L (mm):Nominal length) |
Length
Measuring
Instrument |
Gauge blocks
（Comparison method）
|
From 0.5 mm up to 100 mm |
0.06 µm |
End gauges with flat ends
（Interferometry method）
|
Up to 2100 mm |
(0.18 + 0.38×L /1000) µm |
End gauges with flat ends
（Comparison method）
|
From 25 mm up to 1000 mm |
(0.4 + L /1000) µm |
| From 0.5 mm up to 1060 mm |
(0.5 + L /1000) µm |
| Standard Scale |
Up to 350 mm |
(0.10 + 0.12×L /1000) µm |
| More than 350 mm up to 1000 mm |
(0.06 + 0.25×L /1000) µm |
| Micrometers |
Up to 25 mm
（Micrometer head only） |
0.3 µm |
| Up to 500 mm |
(1.2 + L /175) µm |
| Calipers |
Up to 600 mm |
0.02 mm |
| More than 600 mm up to 1000 mm |
0.03 mm |
| Height gauges |
Up to 600 mm |
0.015 mm |
| More than 600 mm up to 1000 mm |
0.020 mm |
| Depth Gauges |
Up to 600 mm |
0.02 mm |
| More than 600 mm up to 1000 mm |
0.03 mm |
Calibration testers
for dial gauges
|
Up to 5 mm
(0.0002 mm scale) |
0.10 µm |
| Up to 25 mm |
0.3 µm |
| Up to 100 mm |
(0.1 + 4.8×L /1000) µm |
| Dial gauges |
Up to 5 mm
（scale interval 0.001 mm and 0.002 mm） |
0.5 µm |
Up to 10 mm
（scale interval 0.01 mm） |
1.1 µm |
More than 10 mm up to 50 mm
（scale interval 0.01 mm） |
1.3 µm |
More than 50 mm up to 100 mm
（scale interval 0.01 mm） |
2.2 µm |
Up to 50.8 mm
（digital） |
1.1 µm |
More than 50.8 mm up to 100 mm
（digital） |
1.7 µm |
| Dial test indicators |
Up to 0.6 mm
（scale interval 0.001 mm and 0.002 mm） |
0.5 µm |
Up to 1.6 mm
（scale interval 0.01 mm） |
1.3 µm |
| Cylinder gauges |
From 6 mm up to 400 mm |
0.7 µm |
| Electrical comparators |
± 5 µm |
0.15 µm |
| ± 200 µm |
0.2 µm |
| ± 2000 µm |
1.0 µm |
| Ring gauges |
From 6 mm up to 80 mm |
0.7 µm |
| More than 80 mm up to 120 mm |
0.8 µm |
Dimensional
Measuring
Instrument |
Sphere
（Average diameter）
|
From 2 mm less than 120 mm |
0.06 µm |
| From 10 mm up to 40 mm |
(0.24 + 2.6×L /1000) µm |
