Technical Data:
Series: 153
Product type: Micrometer Head, Non-rotating Spindle Type
Feature: Non-rotating spindle
Feature: Torsion-free feed reduces workpiece deformation and wear
Application: Highly accurate positioning
Measuring face: Carbide tip
Measuring-face hardness: 90 HRA or more
Measuring face: Lapped
Finish: Satin-chrome plated
Measuring range: 0 - 25 mm
Graduation: 0.01 mm
Graduation features: Standard; ratchet stop
Stem diameter: 12 mm
Stem: Plain
Spindle end: Flat (carbide tip)
Spindle pitch: 0.5 mm
Accuracy: +/-3 um

Dimensions:
Configuration: 0 - 25 mm / 0 - 1 in with ratchet stop
Spindle Dia.=8 mm
Stem Dia.=12 mm, tolerance 0/-0.011 mm
Body Dia.=18 mm
Rear/reference Dia.=14.8 mm
Reference dimensions=10 mm; 37 mm; 87.5 mm
Retracted reference dimensions=12 mm and 112.5 mm
Ratchet
Mass=125 g
Parenthetical dimensions apply with spindle fully retracted