Digital Electronic Stainless Steel Vernier Caliper 150mm 6inch Micrometer Tool

Measuring range: 0-150mm / 0-6inch Resolution: 0.01mm / 0.0005inch Accuracy: ±0.03mm / 0.001inch Repeatability: 0.01mm / 0.0005inch Max. measuring speed: 1.5m/sec, 60inch/sec Measuring system: Linear capacitive measuing system Displa: LCD display Power: Once silver oxide battery SR44, 1.5V (include) Working temperature: 5°C-40°C / 41°F-104°F Influence of humidity: Not important under 80% of relative humidity. Basic measuring methods: 1. Loosen the locking screw. 2. Switch the unit on with a press on "ON" button. The select the unit system needed by pressing Inch/Metric button. (Each time the button is pressed, inch and metric digits will be displayed alternatively) 3. Apply normal measuring pressure on slider to close te external mesuring jaws. Then press "zero" buttom to reset the display to zero. 4. Can measurements of internal dimensions, also can measurements of external dimensions.