measuring at the bottom On/off switch (battery not included) Metric/inch system interchange at any position With data output interface Color: Gray + Black Material: Plastic digital module, stainless steel measuring Quantity: 3pc Size: approx. 95mmx40mmx20mm / 3.7x1.57x0.78 inch (LxWxH) Resolution: 0.01mm / 0.0004 inch Measuring Range: 0-12.7mm / 5 inch Power Supply: Button Battery (SR44 / LR44) with 1.5V Working Voltage Operating Temperature: 0 - 40 Celsius Storage Temperature: -20 - 70 Celsius Relative Humidity: Less than or equal to 80% Package Includes: 3x Portable Precise Digital Thickness Gauge Meter Tester Micrometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.