Technical Data:
Series: 186
Range: 15.5 - 25 mm
Accuracy: +/-0.002 in
Radius size stamped on each gage
Concave and convex radius gages form a pair
Locking clamp

Content:
15 pairs: 15.5 - 20 mm by 0.5 mm; 21 - 25 mm by 1 mm

Remark:
180 deg arc