B-13BMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.Ratchet stop typeFriction thimble type MicrometerThe origin of Mitutoyo’s trustworthy brand of small tool instrumentsOutside MicrometersSERIES 102•Heat-insulated frame.•Cut-away frame (behind anvil) for measuring in hard-to-reach places.•Equipped with Ratchet Stop for constant measuring force.•Measuring faces: Carbide. •In addition to standard specication, a non-rotating spindle type tooth thickness micrometer (refer to page B-33 for details) is also available.Ratchet stop102-301An inspection certicate is supplied as standard. Refer to page U-9 for details.Common specications• Measuring force: 5 to 10 N• Standard accessories: Reference bar, 1 pc. (except for measuring range 0 to 25 mm models) Spanner (301336), 1 pc. (for measuring range 0 to 25 mm/25 to 50 mm models) Spanner (200877), 1 pc. (for measuring range 50 to 75 mm/75 to 100 mm models)SPECIFICATIONSMetricOrder No.Range (mm)Graduation (mm)Maximum permissible error JMPE (µm)Flatness (µm)Parallelism (µm)Constant-force device 102-301 0 - 250.01±20.62Ratchet stop102-30225 - 50102-30350 - 75102-30475 - 100±33MetricOrder No.Range (mm)Graduation (mm)Maximum permissible error JMPE (µm)Flatness (µm)Parallelism (µm)Constant-force device 102-311 0 - 250.001±10.31Ratchet stop102-313Friction thimble102-31225 - 50Ratchet stopDIMENSIONSUnit: mmMetric Micrometer setOrder No.Range (mm)Models included102-911-400 - 100(Four micrometers per set)• 102-301 102-302 102-303 102-304• 3 micrometer standards(Minimum measuring length)(Anvil)（Spindle）(Measuring face)ø6.35ø1866.9baø6.3ø6.32c25L15Range (mm)Labc0 - 2505262.525 - 50257.83250 - 755010.64575 - 100751158InchOrder No.Range (in)Graduation (in)Maximum permissible error JMPE (in)Flatness (in)Parallelism (in)Constant-force device 102-327-100 - 10.0001±0.00010.0000240.00008Ratchet stop102-329-10Friction thimble102-328-101 - 2Ratchet stop102-330-10Friction thimble102-331-102 - 3Ratchet stop102-332-103 - 4±0.000150.00012Ratchet stop
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