TM 5-6675-250-10
2-5. ASSEMBLY AND PREPARATION FOR USE - Continued
AUXILIARY TRIPOD - Continued
NOTE
If a plumb bob is to be used for centering the
instrument over a fixed reference point, use
the plumb bob assembly stored in the transit
case.
h.
I n s e r t extension hook (1) through the
bridge screw and attach to the pointer (2)
on the underside of GRU housing (3).
i.
A t t a c h plumb bob assembly to plumb
pointer (2).
Adjust cord length to position plumb bob
j.
approximately over fixed reference point.
Make sure adapter assembly is firmly
attached.
k.
Turn auxiliary tripod to position point of
p l u m b bob over the fixed reference
point. Check plumb bob extension hook (1)
to be sure that it is not touching the sides
of the bridge screw.
2-32
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