B-93BMitutoyo operates a policy of continuous improvement that aims to provide the customer with the benet of the latest technological advances.Therefore the company reserves the right to change any or all aspects of any product specication without notice.Micrometer HeadThe origin of Mitutoyo’s trustworthy brand of small tool instruments Technical DataGraduation: 0.01mm, 0.001mm, .001" or .0001"Spindle pitch: 0.5mm or .025"Micrometer HeadsSERIES 151 — Medium-sized Standard Type with 8mm diameter spindle• Larger spindle for heavy-duty applications (normally ø6.35mm).DIMENSIONSUnit: mmPlain stemStem locknutPlain stem and spindle lockStem locknut and spindle lockPlain stemStem locknutStem locknutPlain stem(81.5)6356.5(38)29ø12-00.011ø8Set screw0455ø21151-227 Mass: 150g(81.5)6356.5(38)294ø16ø12 -00.011ø8Set screwLocknutM12×0.50455ø21Fixture thickness: 25.5mm151-228 Mass: 155gø22ø12 -00.011ø2119(28.6)53.665.9(90.9)ø83.54505Set screwSpindle lock151-225 Mass: 165gø22ø21ø12 -00.011ø16ø819(28.6)65.953.6(90.9)43.54505M12×0.5Locknut Set screwSpindle lockFixture thickness: 15.5mm151-226 Mass: 165g( ): With spindle fully retracted.SPECIFICATIONSMetricInchOrder No.RangeAccuracyStem dia.StemSpindle endSpecial featuresOrder No.RangeAccuracyStem dia.StemSpindle endSpecial features151-2240 - 25mm±2µm12mmPlainFlat (carbide tip)—151-2400 - .1"±.0001".5"PlainFlat (carbide tip)—151-223W/ clamp nut151-239W/ clamp nut151-214**Plain*151-238PlainW/ vernier (.0001")151-213**W/ clamp nut*151-237W/ clamp nut151-222PlainW/ vernier (0.001mm)151-241**Plain*w/o ratchet stop151-221W/ clamp nut151-242**W/ clamp nut*151-212**Plain*151-243**Plain*w/o ratchet stop (.0001")151-211**W/ clamp nut*151-244**W/ clamp nut*151-227Plainw/o ratchet stop151-2720 - .2"±.0002"Plain—151-228W/ clamp nut151-271W/ clamp nut151-225Plain** with spindle lock ** made-to-order models 151-226W/ clamp nut*151-2560 - 50mm±4µmPlain—151-255W/ clamp nut151-260Plainw/o ratchet stop151-259W/ clamp nut* with spindle lock ** made-to-order models


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