편리한 수평계 (수평 및 수직 기울기 측정기)

The handy level meter can measure vertical and horizontal inclination.
It is used to measure the angular deviation of the floor surface when hanging a picture frame in a house.
This program can easily measure the inclination of surfaces and walls regardless of location using the built-in sensor of the smartphone without the need for a separate device.
It can be useful when hanging a shelf or installing a refrigerator that is sensitive to tilt. It can also be used as an auxiliary tool for sports that are sensitive to the slope of the floor, such as golf.