Trimble Laser GL760

Adjusting the calibration at the laser

Press both axes alignment buttons to clear any stored rake angle

Position the receiver at the midpoint of the two marks on the wall

Add/subtract grade in the appropriate axis using the up/down buttons

Center the beam in the receiver

Store the new calibration value and zero out the grade display using the hidden button sequence

Rotate the laser 180° back to the original face and ensure axis is less than 5/16 in. (8 mm) from the midpoint line

Is additional adjustment required?

Repeat Step 1 through Step 3 if additional adjustment is required

Set up the laser 90 m (300 ft) from a wall.

Set the grade to 0.000% in both axes.

Raise/lower the receiver until you get an on-grade reading for the +  axis and make a mark on the wall.

Rotate the laser 180° (–  axis toward the wall) and allow the laser to re-level.

Raise/lower the receiver until you get an on-grade reading for the –  axis and make a mark on the wall.

Measure the difference between the two marks (in inches or mm).

External Optical Components Cleaning

Ensure the following items are ready for cleaning

Blow off any loose debris from optical components

Clean all external optical components with glass cleaner and soft cloth

Laser Outer Surface and Battery Housing Cleaning

Blow off any loose debris from the laser’s outer surface and battery housing

Wipe off dust or dirt from the laser’s outer surface with a moist, clean cloth

Clean inside the battery housing with a moist, clean cloth