Ruler - Bubble Level

Use your phone screen as a ruler and a Digital Compass

The ruler tool set includes the following features:
- Ruler for measuring small items in centimeters or inches, you can measure in 2 dimensions or measure in width
- Protractor to measure component detail angles, the largest measuring angle is 180 degrees
- Bubble level to measure horizontal or vertical plane inclination, you can use table tilt alignment
- The digital compass has the ability to measure the angle of rotation and is necessary for you to determine the direction
- Flashlight illuminates when the power goes out or finds items in the dark, and built-in SOS signal
- Night color warning light flashes when needed, you can change 4 colors