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Internal Groove Micrometer


Type-A Internal groove micrometer Internal groove micrometer

Special measuring faces for measuring undercuts in

bores and other hard-to-reach dimensions.

• Resolution:0.01mm / 0.001".
Internal groove micrometer Type-A
RangeAccuracyRangeAccuracy
25-50mm / 1-2" 0.006mm/0.00024" 100-125mm / 4-5"0.009mm/0.00036"
50-75mm / 2-3" 0.007mm/0.00028" 125-150mm / 5-6"0.009mm/0.00036"
75-100mm / 3-4"0.008mm/0.00032" 150-175mm / 6-7"0.010mm/0.00040"
1.2" internal groove micrometers, 2" internal groove micrometers . . . , 7" internal groove micrometer.
Type-B Internal groove micrometer Internal groove micrometer


Flat measuring faces for measuring inside width.

• Resolution:0.01mm / 0.001".
Internal groove micrometer Type-B
RangeAccuracyRangeAccuracy
5-30mm / 0.2"-1.2"0.005mm/0.00020" 100-125mm / 4-5"0.009mm/0.00036"
25-50mm / 1-2"0.006mm/0.00024" 125-150mm / 5-6"0.009mm/0.00036"
50-75mm / 2-3"0.007mm/0.00028" 150-175mm / 6-7"0.010mm/0.00040"
75-100mm / 3-4"0.008mm/0.00032" 175-200mm / 7-8"0.010mm/0.00040"
1.2" internal groove micrometers, 2" internal groove micrometers . . . , 8" internal groove micrometer.
  Reference hyperlink:   Groove micrometer.   Groove caliper.