Technical Data:
Digital external hook calipers
Measure width and distance of grooves inside bores
Non waterproof
Resolution: 0.01mm/0.0005in
Automatic power off, move the digital unit to turn on power
Battery: CR2032
Made of stainless steel
Buttons: on/off, zero, mm/inch
Range: 0-300mm/0-12in
Accuracy: +/-0.04mm

Dimensions:
L=460mm
b=15mm
e=82mm
f=80mm
Drawing dimensions (unlabeled)=7mm; 4mm; 16mm

Remark:
With data interface
Optional wireless transmitter code 7315-25; receiver is needed