Technical Data:
Series: 148
Product type: Micrometer Head, Fine Spindle Feed of 0.25 mm/rev
Feature: Fine spindle feeding for fine adjustment and positioning
Spindle pitch: 0.25 mm/rev
Measuring face material: Alloy tool steel
Measuring-face hardness: 60 HRC or more
Measuring face: Lapped
Finish: Satin-chrome plated
Measuring range: 0 - 13 mm
Graduation: 0.01 mm
Stem diameter: 9.5 mm
Stem: Plain
Spindle end: Spherical SR4
Accuracy: +/-2 um

Dimensions:
Configuration: Plain stem, 9.5 mm / 0.375 in stem class
Representative drawing model: 148-132-10
Spindle Dia.=5 mm
Stem Dia.=9.5 mm, tolerance 0/-0.009 mm
Body Dia.=13 mm
Reference dimensions=9.5 mm; 27 mm; 31.5 mm
Retracted reference dimensions=14 mm and 44.5 mm
Rear/reference detail=3.5 mm
Mass=30 g
Parenthetical dimensions apply with spindle fully retracted
Spherical spindle end radius=SR4