This calibration is mainly for
Steps of Calibration:
1.) As shown in the video, tap "Cali / Quick", the laser starts emitting. Point the laser to the ground and find the laser dot on the screen.
2.) A cross appears on the screen. The intersection of the cross represents the recorded laser spot position in the latest standard calibration.
a.) Adjust the distance between iPhone and the laser spot on the ground, by changing height of the iPhone to the floor. By doing so, you can move the laser spot horizontally toward the vertical axis of the crosshair.
b.) Slightly turn the iPin laser head so that the laser dot moves vertically toward the intersection of the cross.
4.) Quick calibration is completed.
5.) Do not touch or turn the laser head until you finish all measurement works.