Standard for Inside Micrometer

  • Used for zero setting of inside micrometer.
Standard for inside micrometer
L Accuracy Parallel
50mm / 2"±0.002mm0.002mm
75mm / 3"±0.003mm0.003mm
100mm / 4"±0.004mm0.004mm
150mm / 6"±0.004mm0.004mm
200mm / 8"±0.004mm0.004mm
250mm / 10"±0.004mm0.004mm
275mm / 11"±0.004mm0.004mm
Micrometer ring gauge (Inch)
Size A B C
0.16"±0.00006"0.00004"±0.0004"
0.2"±0.00006"0.00004"±0.0004"
0.275"±0.00006"0.00004"±0.0004"
0.35"±0.00006"0.00004"±0.0004"
0.425"±0.00006"0.00004"±0.0004"
0.5"±0.00006"0.00004"±0.0004"
0.65"±0.00006"0.00004"±0.0004"
0.8"±0.00006"0.00004"±0.0004"
1"±0.00006"0.00004"±0.0004"
1.2"±0.00006"0.00004"±0.0004"
1.6"±0.00006"0.00004"±0.0004"
2"±0.00006"0.00006"±0.0008"
2.5"±0.00006"0.00006"±0.0008"
2.8"±0.00006"0.00006"±0.0008"
3"±0.00006"0.00006"±0.0008"
3.5"±0.00006"0.00006"±0.0008"
4"±0.00006"0.00008"±0.0008"
6"±0.00010"0.00008"±0.0008"
8"±0.00010"0.00008"±0.0008"