A spirit level is a tool used to measure whether a surface of an object is level or vertical.
It is also a collection, which contains the functions of ruler and angle ruler. It is easy to use, portable and convenient.
It is built into your mobile phone and can be used anytime, anywhere!

Applicable scene:
-Indicate the level of the object. When hanging a picture, use this small program to let your picture find the level.
-When you need to draw a right angle in office and study, you can use this tool.
-To install simple furniture, you can use this assistant to find the horizontal and vertical positions,
so that you can easily install the furniture.
-Construction site, use this tool on the construction site, it can help you find the vertical corner.


Feature:
-Horizontal and vertical level tools
-Free collection of various tools
-Screen lock to avoid changing orientation
-Do not look at the screen, sound reminder
-Calibration and reset functions
-Free to use.
-Simple to use.
-No internet required.
-Easy to use.

Use this collection of classic tools to make your life and study more convenient.