Retro Style Vernier Caliper High Accuracy.
Precision sliding gauge have dual scale of inches and millimeters, measures up to 3.15" (80mm) in increments of 1/16" (1mm) 
Makes quick accurate inside, outside and diameter measurements.
Perfect for measuring Gemstones and other jewelry components, practical and reliable.
The vernier caliper enables easy operation and high accuracy.
Made from Non-magnetic, Non-rusting and more gentle than hardened steel calipers.