TM 5-6675-312-14
WARNING
Severe eye damage can result from performing observations against direct sunlight if the black
eyepiece filter is not used. 5-6675-312-14/2-23
Figure 2-23. Black eyepiece filter installation.
(7) Center and level the theodolite.
(8) Focus the telescope as follows:
(a)
Direct the telescope toward a uniformly lighted background. Adjust the telesc pe eyepiece (fig. 2-1)
o
until the cross hairs are sharp and black.
NOTE
Observe the setting on the telescope eyepiece (fig. 2-1). This setting will remain constant for the
same observer but will change for other observers.
(b)
Adjust the focusing sleeve (fig. 2-1) to bring into view a clear, sharp image of the object being
sighted.
(9) Loosen vertical and horizontal clamps (fig. 2-1) and sight theodolite on target using optical sight. Tighten
vertical and horizontal clamps.
(10) Sighting through the telescope, adjust vertical and horizontal drive screws (fig. 2-1) to place cross hairs on
target.
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