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Electrical Connection
Mitutoyo Micrometer Heads
 |  |
Ratchet-Stop Thimble | Plain Thimble |
Use these micrometer heads in jigs, fixtures, machine tools, movable tables, and other equipment that require precise adjustments. They are held in place by the cylindrical mounting hub using your existing brackets or fixtures. Spindle length is the maximum extended distance when the micrometer head is set at zero.
Ratchet-Stop Thimble—Ratchet-stop thimbles have a constant-force mechanism to ensure repeatable measurements without relying on operator feel. They also have a speeder knob to reduce the time it takes to move the spindle. Once the spindle contacts the surface of the measured object, it will stop tightening, but the speeder knob will continue turning with a clicking sound.
Plain Thimble—Plain thimbles turn freely without friction or a stopping device and rely on operator feel for accurate measurements.
Nonrotating Spindle—Nonrotating spindles prevent scratches on delicate work surfaces and eliminate distortion of soft or elastic material.
Round Spindle Tip—Round spindle tips minimize errors from misalignment, so they’re often used as feed devices.
Clamp Nut—Clamp nuts securely hold the micrometer head and provide extra support.
Locknuts—Locknuts lock the spindle in place.
Spindle | Mounting Hub | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance Measured Range | Accuracy | Measuring Increments | Tip Shape | Dia. | Lg. | Face Material | Overall Lg. | Lg. | Dia. | Features | Mfr. | Mfr. Model No. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Rotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 0.5" | -0.0001" to 0.0001" | 0.001" | Flat | 0.197" | 0.61" | Steel | 2 13/16" | 0.375" | 0.375" | Clamp Nut, Locknuts | Mitutoyo | 148-502 | 19725A62 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 0.5" | -0.0001" to 0.0001" | 0.001" | Round | 0.197" | 0.61" | Steel | 2 13/16" | 0.375" | 0.375" | Clamp Nut, Locknuts | Mitutoyo | 148-852 | 19725A11 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0 mm to 13 mm | -0.002 mm to 0.002 mm | 0.01 mm | Flat | 0.197" | 0.61" | Steel | 2 13/16" | 0.375" | 0.375" | Clamp Nut, Locknuts | Mitutoyo | 148-504 | 19725A12 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Nonrotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" | -0.00015" to 0.00015" | 0.001" | Flat | 0.315" | 1.063" | Carbide | 4 1/4" | 0.394" | 0.500" | — | Mitutoyo | 153-207 | 19725A14 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 2" | -0.0002" to 0.0002" | 0.0002" | Flat | 0.315" | 2.559" | Carbide | 5 5/8" | 0.551" | 0.709" | — | Mitutoyo | 197-201 | 19725A15 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ratchet-Stop Thimble—Rotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" | -0.0001" to 0.0001" | 0.001" | Flat | 0.250" | 1.063" | Carbide | 4 3/4" | 0.591" | 0.375" | Clamp Nut, Locknuts | Mitutoyo | 150-214 | 19725A13 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Starrett Micrometer Heads
Mount these micrometer heads in jigs, fixtures, machine tools, movable tables, and other equipment that require precise adjustments. They are held in place by the cylindrical mounting hub using your existing brackets or fixtures. Spindle length is the maximum extended distance when the micrometer head is set at zero.
Ratchet-Stop Thimble—Ratchet-stop thimbles have a constant-force mechanism to ensure repeatable measurements without relying on operator feel. They also have a speeder knob to reduce the time it takes to move the spindle. Once the spindle contacts the surface of the measured object, it will stop tightening, but the speeder knob will continue turning with a clicking sound.
Plain Thimble—Plain thimbles turn freely without friction or a stopping device and rely on operator feel for accurate measurements.
Nonrotating Spindle—Nonrotating spindles prevent scratches on delicate work surfaces and eliminate distortion of soft or elastic material.
Locknut—Locknuts lock the micrometer’s spindle in place.
Spindle | Mounting Hub | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance Measured Range | Accuracy | Measuring Increments | Tip Shape | Dia. | Lg. | Face Material | Overall Lg. | Lg. | Dia. | Features | Mfr. | Mfr. Model No. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Rotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0 mm to 13 mm | -0.002 mm to 0.002 mm | 0.01 mm | Flat | 0.138" | 0.625" | Steel | 2" | 0.234" | 0.236" | — | Starrett | 460MB | 8578A16 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Nonrotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 0.5" | -0.0001" to 0.0001" | 0.001" | Flat | 0.200" | 0.75" | Steel | 3 7/16" | 0.375" | 0.375" | Locknut | Starrett | 261L | 8578A11 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ratchet-Stop Thimble—Nonrotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 0" to 1" | -0.0001" to 0.0001" | 0.001" | Flat | 0.235" | 1.25" | Steel | 5 1/2" | 0.75" | 0.500" | Locknut | Starrett | 262RL | 8578A12 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ratchet-Stop Thimble—Rotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" | -0.00005" to 0.00005" | 0.0001" | Flat | 0.234" | 1.25" | Carbide | 4 63/64" | 0.75" | 0.500" | Locknut | Starrett | T263XRL | 8578A71 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0 mm to 13 mm | -0.00125 mm to 0.00125 mm | 0.002 mm | Flat | 0.203" | 0.75" | Carbide | 3 25/64" | 0.5" | 0.375" | Locknut | Starrett | V463MXRL | 8578A73 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Precision-Adjust Micrometer Heads
 |
For near perfect positioning, the spindle on these micrometer heads moves in smaller increments than the spindle on any other micrometer head we offer. Mount them in equipment requiring extremely precise adjustments, such as positioning tables used in semiconductor manufacturing or in optical component alignment. They are held in place by the cylindrical mounting hub using your existing brackets or fixtures. For a tight hold and extra support, secure the clamp nut against the bracket or fixture on the mounting hub.
Spindle length is the maximum extended distance when the micrometer head is set at zero.
Plain Thimble—Plain thimbles turn freely without friction or a stopping device and rely on operator feel for accurate measurements.
Round Spindle Tip—Round spindle tips minimize errors from misalignment, so they’re often used as feed devices.
Spindle | Mounting Hub | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance Measured Range, mm | Accuracy, mm | Measuring Increments, mm | Travel Distance per Turn, mm | Tip Shape | Dia. | Lg. | Face Material | Overall Lg. | Lg. | Dia. | Features | Mfr. | Mfr. Model No. | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Rotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0 to 6.5 | -0.002 to 0.002 | 0.002 | 0.1 | Round | 0.197" | 0.55" | Steel | 2 27/64" | 0.375" | 0.375" | Clamp Nut | Mitutoyo | 148-143-10 | 6256N13 | 0000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0 to 6.5 | -0.002 to 0.002 | 0.01 | 0.25 | Round | 0.250" | 0.35" | Steel | 1 29/32" | 0.375" | 0.375" | Clamp Nut | Mitutoyo | 148-323-10 | 6256N12 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0 to 13 | -0.002 to 0.002 | 0.01 | 0.25 | Round | 0.197" | 0.69" | Steel | 2 13/16" | 0.375" | 0.375" | Clamp Nut | Mitutoyo | 148-133-10 | 6256N11 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mitutoyo Electronic Micrometer Heads
 |  |
350 Models | 164 Model |
For easier reading than other micrometer heads, these show measurements on an LCD. Mount them in jigs, fixtures, machine tools, movable tables, and other equipment that require precise adjustments. They are held in place by the cylindrical mounting hub using your existing brackets or fixtures. Spindle length is the maximum extended distance when the micrometer head is set at zero.
Zero-position memory, also known as absolute (ABS) positioning, retains the measuring position when the micrometer is turned off. A zero-set button lets you start measuring at any point. SPC data output allows for connection to a computer or data processor.
Ratchet-Stop Thimble—Ratchet-stop thimbles have a constant-force mechanism to ensure repeatable measurements without relying on operator feel. They also have a speeder knob to reduce the time it takes to move the spindle. Once the spindle contacts the surface of the measured object, it will stop tightening, but the speeder knob will continue turning with a clicking sound.
Plain Thimble—Plain thimbles turn freely without friction or a stopping device and rely on operator feel for accurate measurements.
Nonrotating Spindle—Nonrotating spindles prevent scratches on delicate work surfaces and eliminate distortion of soft or elastic material.
Flat Spindle Tip—Flat spindle tips are often used in measurement applications and for bearing against round surfaces.
Round Spindle Tip—Round spindle tips minimize errors from misalignment, so they’re often used as feed devices.
Clamp Nut—Clamp nuts securely hold the micrometer head and provide extra support.
Distance Measured Range | Accuracy | Measuring Increments | Spindle Lg. | Overall Lg. | Batteries Included | Electrical Connection | Features | Mfr. Model No. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ratchet-Stop Thimble—Rotating Spindle with Flat Spindle Tip | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" 0 mm to 25.4 mm | -0.0001" to 0.0001" -0.0025 mm to 0.0025 mm | 0.00005" 0.001 mm | 1.06" | 6 5/32" | Yes | Mitutoyo Data Out Switch B | Clamp Nut, Zero-Position Memory (ABS), Zero-Set Button | 350-352-30 | 8283A22 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" 0 mm to 25.4 mm | -0.0001" to 0.0001" -0.0025 mm to 0.0025 mm | 0.00005" 0.001 mm | 1.06" | 6 5/32" | Yes | Mitutoyo Data Out Switch B | Zero-Position Memory (ABS), Zero-Set Button | 350-351-30 | 8283A21 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ratchet-Stop Thimble—Rotating Spindle with Round Spindle Tip | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" 0 mm to 25.4 mm | -0.0001" to 0.0001" -0.0025 mm to 0.0025 mm | 0.00005" 0.001 mm | 1.06" | 6 5/32" | Yes | Mitutoyo Data Out Switch B | Clamp Nut, Zero-Position Memory (ABS), Zero-Set Button | 350-354-32 | 8283A23 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Nonrotating Spindle with Flat Spindle Tip | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 2" 0 mm to 50.8 mm | -0.00015" to 0.00015" -0.003 mm to 0.003 mm | 0.00005" 0.001 mm | 2" | 6 11/16" | Yes | Mitutoyo Data Out Switch C | Rotating Display, Zero-Position Memory (ABS), Zero-Set Button | 164-164 | 19705A91 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Micrometer Head Mounting Brackets
 |  |  |  |
Style A | Style B | Style C | Style D |
Mount a micrometer head to your jig or fixture to accurately position workpieces.
For Stems with Clamping Nut—Brackets for stems with a clamping nut are designed to be used with the nut on your micrometer head’s stem. Unthread the clamping nut, slide your micrometer spindle through the bracket, and thread the clamping nut back on.
For Plain Stems—Brackets for plain stems include a set screw that tightens the bracket around the stem of your micrometer to secure it in place.
Overall | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Ht. | Wd. | Dp. | For Micrometer Stem Dia., mm | Mounting Fasteners Included | Material | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
For Stems with Clamping Nut | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 9/16" | 1 9/16" | 1/4" | 9.5 | Yes | Iron | 5646N31 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 9/16" | 2 3/8" | 7/16" | 9.5 | Yes | Iron | 5646N32 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B | 1 1/2" | 5/8" | 1/4" | 9.5 | Yes | Iron | 5646N21 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B | 1 15/16" | 13/16" | 7/16" | 9.5 | Yes | Iron | 5646N22 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 1 1/16" | 9/16" | 15/16" | 9.5 | Yes | Iron | 5646N11 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 1 9/16" | 3/4" | 1 7/16" | 9.5 | Yes | Iron | 5646N12 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| D | 1 1/16" | 9/16" | 1" | 9.5 | Yes | Iron | 5646N41 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| D | 1 3/8" | 9/16" | 1 5/8" | 9.5 | Yes | Iron | 5646N42 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
For Plain Stems | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 9/16" | 1 9/16" | 3/8" | 9.5 | Yes | Iron | 5608N31 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| A | 13/16" | 2 3/8" | 5/8" | 9.5 | Yes | Iron | 5608N32 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B | 1 11/16" | 9/16" | 3/8" | 9.5 | Yes | Iron | 5608N21 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B | 2 1/16" | 13/16" | 9/16" | 9.5 | Yes | Iron | 5608N22 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 1 1/4" | 9/16" | 15/16" | 9.5 | Yes | Iron | 5608N11 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C | 1 11/16" | 3/4" | 1 1/2" | 9.5 | Yes | Iron | 5608N12 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| D | 1 1/4" | 9/16" | 1" | 9.5 | Yes | Iron | 5608N41 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| D | 1 9/16" | 9/16" | 1 9/16" | 9.5 | Yes | Iron | 5608N42 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leveling Micrometer Heads
 |  |
Precisely level heavy machines, surface plates, and other devices when accuracy is crucial. Turn the handle to adjust their height, even when under a machine.
Plain Thimble—Plain thimbles turn freely without friction or a stopping device and rely on operator feel for accurate measurements.
Overall | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance Measured Range, mm | Measuring Increments, mm | Point Angle | Spindle Face Material | Wt. Cap., lb. | Wd. | Ht. | Base Dia. | Handle Lg. | Features | Mfr. | Mfr. Model No. | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Rotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 60 to 75 | 0.01 | 90° | Steel | 850 | 4 19/32" | 2 3/8" | 2 17/32" | 3 11/32" | Handle | Mitutoyo | 7850 | 8614N11 | 0000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mitutoyo Electronic Micrometer Heads with Calibration Certificate
| |
350 Models | 164 Model |
These micrometer heads come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. For easier reading than other micrometer heads, these show measurements on an LCD. Mount them in jigs, fixtures, machine tools, movable tables, and other equipment that require precise adjustments. They are held in place by the cylindrical mounting hub using your existing brackets or fixtures. Spindle length is the maximum extended distance when the micrometer head is set at zero.
Zero-position memory, also known as absolute (ABS) positioning, retains the measuring position when the micrometer is turned off. A zero-set button lets you start measuring at any point. SPC data output allows for connection to a computer or data processor.
Ratchet-Stop Thimble—Ratchet-stop thimbles have a constant-force mechanism to ensure repeatable measurements without relying on operator feel. They also have a speeder knob to reduce the time it takes to move the spindle. Once the spindle contacts the surface of the measured object, it will stop tightening, but the speeder knob will continue turning with a clicking sound.
Plain Thimble—Plain thimbles turn freely without friction or a stopping device and rely on operator feel for accurate measurements.
Nonrotating Spindle—Nonrotating spindles prevent scratches on delicate work surfaces and eliminate distortion of soft or elastic material.
Flat Spindle Tip—Flat spindle tips are often used in measurement applications and for bearing against round surfaces.
Round Spindle Tip—Round spindle tips minimize errors from misalignment, so they’re often used as feed devices.
Clamp Nut—Clamp nuts securely hold the micrometer head and provide extra support.
Distance Measured Range | Accuracy | Measuring Increments | Spindle Lg. | Overall Lg. | Batteries Included | Electrical Connection | Features | Mfr. Model No. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Ratchet-Stop Thimble—Rotating Spindle with Flat Spindle Tip | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" 0 mm to 25.4 mm | -0.0001" to 0.0001" -0.0025 mm to 0.0025 mm | 0.00005" 0.001 mm | 1.06" | 6 5/32" | Yes | Mitutoyo Data Out Switch B | Clamp Nut, Zero-Position Memory (ABS), Zero-Set Button | 350-352-30 | 8283A46 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" 0 mm to 25.4 mm | -0.0001" to 0.0001" -0.0025 mm to 0.0025 mm | 0.00005" 0.001 mm | 1.06" | 6 5/32" | Yes | Mitutoyo Data Out Switch B | Zero-Position Memory (ABS), Zero-Set Button | 350-351-30 | 8283A45 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ratchet-Stop Thimble—Rotating Spindle with Round Spindle Tip | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" 0 mm to 25.4 mm | -0.0001" to 0.0001" -0.0025 mm to 0.0025 mm | 0.00005" 0.001 mm | 1.06" | 6 5/32" | Yes | Mitutoyo Data Out Switch B | Clamp Nut, Zero-Position Memory (ABS), Zero-Set Button | 350-354-32 | 8283A47 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Plain Thimble—Nonrotating Spindle with Flat Spindle Tip | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 2" 0 mm to 50.8 mm | -0.00015" to 0.00015" -0.003 mm to 0.003 mm | 0.00005" 0.001 mm | 2" | 6 11/16" | Yes | Mitutoyo Data Out Switch C | Rotating Display, Zero-Position Memory (ABS), Zero-Set Button | 164-164 | 19705A11 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Economy Electronic Micrometer Heads
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Mount these micrometer heads in jigs, fixtures, machine tools, movable tables, and other equipment that require precise adjustments. The friction thimble will turn with resistance as soon as the the spindle touches the object you're measuring, which helps you avoid overtightening. These heads are held in place by the cylindrical mounting hub using your existing brackets or fixtures. Spindle length is the maximum extended distance when the micrometer head is set at zero.
The LCD display makes results easy to read. They have zero-position memory, also called absolute positioning (ABS), which keeps the micrometer in the same position after it is turned off. These micrometers have a zero-set button to start measuring at any point along the spindle, like pressing a tare button on a scale.
Spindle | Mounting Hub | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Distance Measured Range | Accuracy | Measuring Increments | Tip Shape | Dia. | Lg. | Face Material | Overall Lg. | Lg. | Dia. | Batteries Included | Features | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Friction Thimble—Rotating Spindle | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 0" to 1" 0 mm to 25.4 mm | -0.00012" to 0.00012" -0.003 mm to 0.003 mm | 0.00005" 0.001 mm | Flat | 0.255" | 1.27" | Carbide | 5 1/4" | 0.69" | 0.472" | Yes | Zero-Position Memory (ABS), Zero-Set Button | 5526N11 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
