Spirit level is a tool used to measure or determine an object or line in the average position of both vertical and horizontal measurements.

There are many types of spirit level tools used in carpentry, but the type most often used is a 120 cm long spirit level made of wood with a brass edge.

Where in this tool there are two flatness checkers for both vertical and horizontal which are made of glass in which there are liquid bubbles, and at the edge of the tool there is a dividing line that can be used as a measuring tool for length.

Along with the times, now the spirit level can be accessed quickly directly from a smartphone. The advantages of using the application include:
- Circle view
- Vertical and horizontal view
- There is an angle degree indicator
- Data can be saved
- Attractive appearance and easy to use

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