Technical Data:
Groove micrometer
Measure width of grooves inside bores
Graduation: 0.01mm
Two graduations for inside and outside measurements
Non-rotating spindle
Two-directional ratchet stop
Range outside A: 0-25mm
Range inside B: 1.6-26.5mm
Accuracy: 10um

Dimensions:
L=90mm
d=6.5mm
d1=3mm
d2=5mm
Groove measuring-face thickness: 0.75mm each side
Drawing references: dia.16mm; dia.19mm; 32mm; 72mm

Remark:
3287-251B does not have sleeve
Applications shown: measure width of groove; measure width of keyway; measure position of groove