Detailed Gem Gauge/ Caliper Description:
The pocket thickness gauge is designed to measure the thickness of gem stone, leather, builiding material, metal plate and plastic plate etc. It is suited for quick, efficient, repeated measuring and particularly used to measure the small gem stone, and workpiece of thick rim and thin center. Specifications: 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/s. 6) Alarm: voltage low, over speed. 7) Power supply: sliver oxide battery SR44. 8) Battery life: approx.2 years. 9) Operation temperature rage: 0-40°C. 10) Storage temperature range: -20 ~ 70°C
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