MEASURING INSTRUMENTS CATALOG No.E2021
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B-41BMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.MicrometerThe origin of Mitutoyo’s trustworthy brand of small tool instrumentsSpline Micrometers SERIES 331, 111, 131• The anvil and spindle are of small diameter for measuring splined shafts, slots and keyways. • IP65 water/dust protection (series 331).• Measuring faces: Carbide.• Equipped with Ratchet Stop for constant measuring force.111-115Inch/MetricOrder No.Range (in)ResolutionMaximum permissible error JMPE (in)Flatness(in)Parallelism(in)RemarksDigimatic (LCD)331-351-300 - 10.00005 in/0.001 mm±0.00010.0000120.00008Type A331-352-301 - 2331-353-302 - 3331-354-303 - 4±0.000150.00012331-361-300 - 1±0.00010.00008Type B331-362-301 - 2331-363-302 - 3331-364-303 - 4±0.000150.00012SPECIFICATIONSMetricOrder No.Range (mm)Resolution (mm)Maximum permissible error JMPE (µm)Flatness(µm)Parallelism(µm)RemarksDigimatic (LCD)331-251-30 0 - 250.001±20.32Type A331-252-3025 - 50331-253-3050 - 75331-254-30* 75 - 100±33331-261-30 0 - 25±22Type B331-262-3025 - 50331-263-3050 - 75331-264-30* 75 - 100±33* Made to order.Note: For functional details of series 331 refer to page B-8. Optional connecting cable is available only for water-proof type (Digimatic model).InchOrder No.Range (in)Graduation (in)Maximum permissible error JMPE (in)Flatness(in)Parallelism(in)RemarksAnalog111-1660 - 10.0001±0.000150.0000120.00008Type AMetricOrder No.Range (mm)Graduation (mm)Maximum permissible error JMPE (µm)Flatness(µm)Parallelism(µm)RemarksAnalog111-215 0 - 250.01±30.32Type B111-115 0 - 25Type A111-11625 - 50111-11750 - 75111-118 75 - 100±43111-119100 - 125111-120125 - 150111-121150 - 175±5111-122175 - 2004111-123200 - 225111-124225 - 250±6111-125250 - 275111-126270 - 3005Mechanical counter model131-1150 - 25±30.32Type A331-251-30These marks indicate that a product has successfully passed IP65-level testing, which is carried out by the independent German certication organization TÜV Rheinland.Products equipped with the measurement data output function can be connected to the measurement data network system MeasurLink® (refer to page A-25 for details).IP Codes (series 331)Level 6:Dust-proof.No ingress of dust allowed. Level 5:Protected against water jets.Water projected in jets against the enclosure from any direction shall have no harmful effects. 101055ø3ø2Type A ø3 mmType B ø2 mmUnit: mmUnit: mmApplicable models: series 331

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