ITEM NAME:6"LCD Digital Vernier Caliper Micrometer Stainless Precision Measurement To A2C4 6"LCD Digital Vernier Caliper Micrometer Stainless Precision Measurement To A2C4 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: One silver oxide battery SR44, 1.5V (Not include) Working temperature: 5 Celsius -40 Celsius / 41Fahrenheit -104 Fahrenheit 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. Specifications: Color: Silver material: metal Size: 235*78*14mm Net Weight: 288g Package include: H157 1 * Electronic Digital Vernier caliper (150mm / 6inch) 1 * English manual The package is included. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.