19
Horizontal-line checking.
Place the unit on a tripod between Wall A and B and put the tripod near Wall A. Distance from the center of the
tripod to Wall A should be no more than approx. 1.5 feet (0.5m) and to Wall B approx. 100 feet (30m). (Follow
the instructions on illustration). Switch the unit on.
After leveling, direct the laser beam onto Wall A. Mark the center point of the laser beam on the wall (Point I)