This device is designed to do many functions

1- measure the distance of any line by selecting distance mode then roll the wheel on this line to calculate the distance of this line

2- measure the angle of inclination of any surface by selecting angle mode then place the device on this surface to show on LCD the angle of inclination of this surface

3- measuring the height of any obstacle by selecting height mode and place the shaft horizontally between the device and the obstacle to fix the distance between then point the laser pointer to the top of the obstacle and the device will print the height of the obstacle on the screen