Barbco Pathfinder PF500 Operation Manual page 32

16. Setting the grade. Gently push the "V/%" button on the display. This will flip the readout from
percent to degrees. Choose the appropriate setting.
NOTE- The theodolite will not display the grade if the unit is not level.
17. Use the rear knob above the display to set the grade. Lock this adjustment down by tightening the
larger portion of the adjustment knob.
NOTE- The grade of the theodolite and the grade of the boring machines track MUST be the
same. Inadequate alignment will drastically decrease the Pathfinders accuracy as well as increase the
rotation torque required to turn the pilot rod.
29 Set Up