Micrometers
Groove Micrometers SERIES 146
• Flanged spindle and anvil for measuring width and location of grooves inside bores and tubes. • Two-directional ratchet stop. • Non-rotating spindle.
• For OD and ID measurements, a master gage is required for adjusting the reference point (except for 0-1", [0 - 25 mm]).
Measurement example
B
146-231
SPECIFICATIONS Inch Order No. Range Inside (in)
Range Outside (in)
Graduation (in)
Parallelism (in)
Flange (in) ø0.25
Accuracy* (in)
146-231 146-232 146-233 146-234 146-235
0.055 - 1.05
0 - 1
1.05 - 2.05 2.05 - 3.05 3.05 - 4.05
1 - 2 2 - 3 3 - 4
0.001
±0.0004
0.0004
ø0.5
Metric Order No.
Range Inside (mm)
Range Outside (mm)
Graduation (mm)
Parallelism (µm)
Flange (mm) ø6.35
Accuracy* (µm)
146-221 146-222 146-223 146-224
1.6 - 26.5
0 - 25
26.5 - 51.5 51.5 - 76.5 76.5 - 101.5
25 - 50 50 - 75
0.01
±10
10
ø12.7
146-225 75 - 100 * E MPE (ISO 3611:2023 and ASME B89.1.13-2013)
DIMENSIONS
Unit: mm
(34.5)
25
0.75
19.5
32
47
3
17
0.75
146-221
( ℓ )
0.75
L
0.75
32
3
47
17
146-222, 146-223, 146-224, 146-225
L
( )
25 50 75
(115)
(90) (65) (40)
100
Where to Buy
B-67
Powered by FlippingBook