Description:This item with large and clear LCD with backlight. With absolute angle measurement, you can test whether the working surface is on the level. Measure slope angles 4 x 90 (total 360 degree) range. Features:Wide Measuring range - Measure slope angles 4 x 90 (total 360 degree) range.. Backlight - Large and clear LCD with backlight. Absolute & Relative Measurement modes - You can place the meter on a reference surface zero to measure relative angle, then it will give a result of measured slope angle. With absolute angle measurement, you can test whether the working surface is on the level. Always upright readings - Reading is always displayed upright even the protractor is upside down. Specifications:Condition: 100% Brand NewColor: SliverResolution: 0.1 Accuracy: 0.2 Range: 4 x 90 (0 ~ 360 degree)Working current: <100uAWork temperature: 5 ~ 50 CWork humidity: 85% RHPower: 1 x 9V battery (Not included)Battery Life:> 2000 hoursSize: (L) x (W) x (H) 41.5 x 5.0 x 2.0 cm / 16.34 x 1.97 x 0.79 in (appr.)Package Included:1 x Angle Gauge.