Micrometer Head
Micrometer Heads SERIES 151 — Medium-sized Standard Type with 8 mm Diameter Spindle • Larger spindle (ø8 mm) for heavy-duty applications (normally ø6.35 mm).
B
SPECIFICATIONS Inch Order No. Range (in)
Graduation (in)
Stem dia. (in)
Spindle end
Accuracy (in)
Stem
Special features
151-240 151-239 151-238 151-237
Plain
—
0.001
W/clamp nut
Plain
W / Vernier (0.0001 in)
0.0001
W/clamp nut
0 - 1
±0.0001
151-241-10 151-242-10 151-243-10 151-244-10
Plain* 1
Flat (carbide tip)
W/o ratchet stop
0.5
W/clamp nut* 1
Plain* 1
W/o ratchet stop (0.0001 in)
0.001
W/clamp nut* 1
151-272 151-271
Plain
0 - 2
±0.0002
—
W/clamp nut
• Spindle pitch: 0.025 in • Measuring face: Material/Carbide tip, Hardness/90 HRA or more, Lapped
• Satin-chrome plated *1 With spindle lock
Metric Order No.
Range (mm)
Graduation (mm)
Accuracy (µm)
Stem dia. (mm)
Spindle end
Stem
Special features
151-224 151-223 151-214 151-213 151-222 151-221
Plain
W/clamp nut
0.01
—
Plain* 1
W/clamp nut* 1
Plain
W/clamp nut
W / Vernier (0.001 mm)
0.001
0 - 25
±2
151-212 * 2
Plain* 1
151-211
W/clamp nut* 1
Flat (carbide tip)
12
151-227-10 151-228-10 151-225-10 151-226-10
Plain
W/clamp nut
W/o ratchet stop
Plain* 1
W/clamp nut* 1
0.01
151-256 151-255
Plain
—
W/clamp nut
0 - 50
±4
151-260-10 151-259-10
Plain
W/o ratchet stop
W/clamp nut
• Spindle pitch: 0.5 mm • Measuring face: Material/Carbide tip, Hardness/90 HRA or more, Lapped
• Satin-chrome plated *1 With spindle lock *2 Made-to-order models
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B-111
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