Technical Data:
Series: 151
Product type: Micrometer Head, Medium-sized Standard Type with 8 mm Diameter Spindle
Feature: Larger Dia.8 mm spindle for heavy-duty applications
Spindle pitch: 0.025 in / 0.5 mm
Measuring face: Carbide tip
Measuring-face hardness: 90 HRA or more
Measuring face: Lapped
Finish: Satin-chrome plated
Measuring range: 0 - 25 mm
Graduation: 0.001 mm
Accuracy: +/-2 um
Stem diameter: 12 mm
Stem: Plain
Spindle end: Flat (carbide tip)
Special features: Vernier 0.001 mm
Spindle lock: Yes
Made-to-order model: Yes

Dimensions:
Configuration: Plain stem with spindle lock, standard body
Spindle Dia.=8 mm
Stem Dia.=12 mm, tolerance 0/-0.011 mm
Spindle-lock Dia.=22 mm
Body Dia.=21 mm
Reference dimensions=19 mm; 53.6 mm; 79.4 mm
Retracted reference dimensions=28.6 mm and 104.4 mm
Ratchet
Mass=160 g
Parenthetical dimensions apply with spindle fully retracted