The pocket digital gem gauge is designed to measure the thickness of gem stone,leather,building material,metal plate and plastic

Specifications of  Pocket Digital Gem Gauge :1) Measuring range: 0-12mm/0-0.5'2) Resolution: 0.01mm/0.0005'3) Accuracy: ±0.02mm/±0.0005'4) Repeatability: 0.01mm/0.0005'5) Maximum response speed: 1,500mm/s6) Alarm: voltage low, over speed7) Power supply: sliver oxide battery SR448) Battery life: approx.2 years9) Operation temperature rage: 0-40°C10) Storage temperature range: -20 ~ 70°C