A bubble level Pro spirit level or simply a spirit is an instrument designed to indicate whether a surface is horizontal (level).
Bubble Level app is handy accurate simple to use and incredibly useful tool for your Android device.
It as all features but can not be calibrated. This professional tool called Clinometer is the most precise (all you can get with some calculations) slope measurement tool for the Android.

1. Object alignment
2. Angle measurement
3. Surface flatness
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