Technical Data:
Series: 169
Product type: Disc Micrometer, Non-rotating Spindle Type
Application: Root tangent measurement on spur gears and helical gears
Non-rotating spindle eliminates torque on the workpiece
Measurable module: 0.5 to 6
Constant measuring force: Ratchet Stop
Accuracy basis: EMPE, ISO 3611:2023 and ASME B89.1.13-2013
Measuring range: 25 - 50 mm
Graduation: 0.01 mm
Anvil diameter: Dia.20 mm
Accuracy: +/-4 um
Flatness: 1 um
Parallelism: 4 um
Measuring force: 3 to 8 N

Dimensions:
L=25 mm
a=13.8 mm
b=32 mm
c=5.7 mm
e=20 mm
f=8 mm
t=0.7 mm
Spindle Dia.=6.35 mm
Body Dia.=18 mm
Common drawing dimensions include 25 mm; 6.4 mm; 59 mm / 6.5 mm; 71 mm; 72.4 mm depending on range
Anvil-side detail Dia.=14 mm
Rear body detail=10.8 mm
Center recess shown in catalogue drawing