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Metric Gauge Block Tolerances (ISO 3650:1998)

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Nominal LengthTolerances
Calibration Grade KGrade 0Grade 1Grade 2
Over (mm)Up to and including (mm)Deviation of length from nominal length any point ±µmVariation in length µmDeviation of length from nominal length any point ±µmVariation in length µmDeviation of length from nominal length any point ±µmVariation in length µmDeviation of length from nominal length any point ±µmVariation in length µm
0.5100.20.050.120.10.20.160.450.3
10250.30.050.140.10.30.160.60.3
25500.40.060.20.10.40.180.80.3
50750.50.060.250.120.50.1810.35
751000.60.070.30.120.60.21.20.35
1001500.80.080.40.140.80.21.60.4
15020010.090.50.1610.2520.4
2002501.20.10.60.161.20.252.40.45
2503001.40.10.70.181.40.252.80.5
3004001.80.120.90.21.80.33.60.5
4005002.20.141.10.252.20.354.40.6
5006002.60.161.30.252.60.450.7
60070030.181.50.330.4560.7
7008003.40.21.70.33.40.56.50.8
8009003.80.21.90.353.80.57.50.9
90010004.20.2520.44.20.681


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