F-41FMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.Dial IndicatorsComparison measuring instruments which ensure high quality, high accuracy and reliability.DIMENSIONS Unit: mmUnit: inNote 1: When installing an optional back (refer to page F-61 for details) 4 retaining screws must also be obtained (546666: Self-tapping screw only for plastic). Do not apply a tightening torque of more than 20 N-cm in order to avoid stripping the screw threads.Note 2: An optional lifting lever, release or bezel clamp cannot be installed.SPECIFICATIONSMetricOrder No.Graduation (mm)Range (range/rev) (mm)Maximum permissible error (MPE) (µm)Dial readingMeasuring force (N)w/lugFlat-backIndication errorHysteresisRepeat-ability1/10 Rev1/2 Rev1 RevMeasuring range—2971AB0.010.5 (0.7)5——83325-0-251.4 or less—2972AB0.011 (1.4)5——83350-0-501.4 or less—2973AB0.021.6 (2)8——166580-0-801.4 or lessFEATURESMetricOrder No.10100w/lugFlat-back—2971AB4444—2972AB4444—2973AB4444ISO/JIS typeMetricOrder No.ABCDFGHIMass (g)2971AB43.265.65716.52116.8557.6702972AB43.2665716.52117.2557.62973AB43.266.35716.52117.5557.6InchOrder No.ABCDFGHIMass (g)2976AB1.702.552.240.650.800.632.170.30702977AB1.702.562.240.650.800.642.170.302978AB1.702.572.240.650.800.652.170.30Note: Refer to pages F-57 to F-60 for details of contact points.Note: Completed products inspection is performed in the vertical orientation (contact point downward) and the stated accuracy is guaranteed.InchOrder No.10100w/lugFlat-back—2976AB4444—2977AB4444—2978AB4444InchOrder No.Graduation (in)Range (range/rev) (in)Accuracy (in)Repeat-ability (in)Dial readingMeasuring force (N)w/lugFlat-backFirst 1 Rev/2.5 Rev/10 RevRetrace—2976AB0.00050.02 (0.028)±0.0005/—/—0.00016±0.000110-0-101.4 or less—2977AB0.00050.04 (0.055)±0.0005/—/—0.00016±0.000120-0-201.4 or less—2978AB0.0010.06 (0.079)±0.001/—/—0.0002±0.000230-0-301.4 or lessANSI/AGD typeNote: Completed products inspection is performed in the vertical orientation (contact point downward) and the stated accuracy is guaranteed.ISO/JIS TypeANSI/AGD TypeOptional Accessory• Limit hand (2 pcs.): 21AZB195Iø8 0-0.009GBAøHø4.8D22.5FøCOptionalBack lid installation holes (4 locations)Flat back lid and internal frame are integral molding.M2.5×0.45Installation example of back lid with lugOptionalBack lid installation holes (4 locations)Flat back lid and internal frame are integral molding.Ball contact (ø0.12)21BZB005(thread: No. 4-48 UNF)FIDABGøCøHø0.375 0-0.0012ø0.19
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