Technical Data:
Inside groove vernier caliper
Measure diameter of grooves inside bores
Made of stainless steel
Satin chrome plated reading surface
Range: 18-150mm
Graduation: 0.02mm
Accuracy: +/-0.04mm

Dimensions:
Overall length=236mm
Drawing dimensions (unlabeled)=16mm; 35mm; 4mm; 2mm; 20mm; 9mm; 4mm; 2mm