1. It can be locked at any angle to help you keep data when using it.2. Laser-scale, clear and wear-resistant.Battery, CR2032 3V lithium battery.3. 0-360 Degree overall measurement.Stainless steel ruler with Inch and millimeter scales.4. HOLD/ button: keep measuring angle.5. On / off button: press and hold the on / off button to turn off the power supply. Auto power off.Specification:Dimensions: 0-200mm/7.87inch; 0-300mm/11.81inchDegree: 0-360 degreesBattery: CR2032 3V (not included)Working temperature: 5 Celsius - 50 CelsiusWorking humidity: 85% RHAccuracy: 0.3 degreeResolution: 0.01 degreeColour:Silver + RedMaterial:stainless steel + plasticPackage Contents:1 * Digital Angle MeterOnly the above package content, other products are not included.Note: Light 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 +/- 1-3cm.