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exactly with the line pivot LED. Repeat step 2 and 3 until the vertical crosshair is on
both the forward manhole marker and the line pivot LED on the unit.
3. Align the Laser Beam to the Transit – Place a target in the ditch approximately 15’
(5m) in front of the laser. Looking through the transit at the target, adjust the beam left
or right using the alignment buttons on the remote control until exactly centered on the
vertical crosshair. The transit should then be able to swing from beam, to line pivot
LED, and to forward manhole marker, with each being aligned to the crosshair (Figure
D), Repeat steps 2,3, and 4 if necessary. When all three are accurately aligned, pipe
laying can proceed.
Aligning the beam with a standard transit
Align the transit over the instrument – Mount the
standard transit to the transit mount at the end of
the arm. Using a plumb bob, adjust the arm so the
transit is directly over the centerline of the pipe.
Level the transit. Position the laser so the line
pivot LED is exactly under the plumb point.
Align the Transit to the Forward Manhole – Pivot
the transit until the vertical crosshair splits the
forward manhole marker.
Align to the beam using step 4 above.
Special Transit Method
This method uses the Rod and Crossbrace
system. The laser is mounted with the
Handle/Rod Mount. (Figure F)
1. Mount the Special Transit – With the rod
plumbed, and the laser leveled, mount the
Special Transit on the rod. Position the
transit where it is possible to see the
forward manhole marker, yet as low as
possible on the rod. Secure the rod mounting bracket with the secure knob.
2. Align Transit to Forward Manhole – Use the forward marker knob to adjust the vertical
crosshair until it is aligned with the forward manhole marker.
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