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Preventive-Maintenance Checks and Services -CONT. - TM-9-1290-262-100063
MEASURING HORIZONTAL AND VERTICAL ANGLES
TM-9-1290-262-10 Aiming Circle M2 W/E (1290-00-614-0008) and M2A2 W/E (1290-01-067-0687) Manual
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OPERATION
UNDER
USUAL
CONDITIONS
. . .
MEASURING HORIZONTAL ANGLES
1
Make
sure
aiming
circle
level.
IS
2
Turn
azimuth
knob
and
set
azimuth
scale
and
azimuth
micrometer
scale
to
zero
as
shown
below
54
