Features 1、Wide Measuring range ‑ Measure slope angles 4 x 90° (total 360°) range. 2、Backlight ‑ Large and clear LCD with backlight. 3、Absolute &amp; 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. 4、With absolute angle measurement, you can test whether the working surface is on the level. 5、Always upright readings ‑ Reading is always displayed upright even the protractor is upside down. Specifications 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 New Color: Sliver Resolution: 0.1 ° Accuracy: 0.2 ° Range: 4 x 90 ° (0 ~ 360 degree) Working current: <100uA Work temperature: 5 ~ 50 ° C Work humidity: ≤85% RH Power: 1 x 9V battery (Not included) Battery Life:> 2000 hours Size: (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 Package List