TM 5-6675-250-10
2-5. ASSEMBLY AND PREPARATION FOR USE - Continued
COARSE LEVELING OF UNIT
a.
Coarse level the instrument by releasing
one of the tripod leg clamps (1).
b.
Adjust the leg (2) to obtain a level indica-
tion on the tripod circular level (3). Repeat
procedure for each of the other two legs.
c.
If the unit is to be centered over a fixed
reference point, extend the plumb pointer
(1) located on the bottom of the GRU hous-
ing (2)
Place the GRU on the ground so that the
d.
pointer is close to the fixed point and
press leg spades (1) into the ground.
Release hold down clamps (2) on tripod (3)
e.
and shift GRU in the tripod to position the
pointer over the fixed reference point.
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