Technical Data:
Series: 149
Product type: Micrometer Head, Small Standard Type with Carbide-tipped Spindle
Feature: Carbide-tipped spindle provides high abrasion resistance
Spindle pitch: 0.5 mm / 0.025 in
Measuring face: Carbide tip
Measuring-face hardness: 90 HRA or more
Measuring face: Lapped
Finish: Satin-chrome plated
Measuring range: 0 - 0.5 in
Graduation: 0.001 in
Accuracy: +/-0.0001 in
Stem diameter: 0.375 in
Stem: Plain
Spindle end: Flat (carbide tip)
Graduation features: Reverse reading
Spindle lock: No
Made-to-order model: Yes

Dimensions:
Configuration: Plain stem
Spindle Dia.=6.35 mm
Stem Dia.=9.5 mm, tolerance 0/-0.009 mm
Body Dia.=15 mm
Reference dimensions=15 mm; 32 mm; 43.5 mm
Retracted reference dimensions=17 mm and 58.5 mm
Set screw
Mass=55 g
Parenthetical dimensions apply with spindle fully retracted