Specifications

Chapter 2 - Installation
42S315F 2-17
7. The Target Detail in Figure 2-1 shows the layout of the target. An ideal
setting will occur when the theodolite elevation crosshair is centered on the
middle diamond. Dimensions to other diamond points are given as an
indication of the adjustment required to obtain the ideal setting.
8. Beginning at the inner row of targets and working outward in concentric
circles, adjust the panel corner adjustment below each target. After each
adjustment, fully tighten the adjusting nuts and recheck the setting.
CAUTION
Do not lean on or apply any weight to the theodolite
mounting bracket while setting a target. This will cause an
error in the adjustment.
9. After final alignment, there should be no settings where the theodolite
elevation crosshair is more than halfway from the center to the tip of the
middle diamond. This represents 0.010 inches error.
10. Read and record the final readings of target elevations on the form in Table
2-5. Count the number of 0, 5 and 10 thousandths readings, and write these
down in the Summary under 'Count'. Follow the remainder of the
calculation portion of the table to determine the overall setting accuracy of
the reflector.