NOTE
The reading on the azimuth counter of the M117/M117A2 panoramic telescope must agree with the toler-
ances given below.
CANT ADJUSTMENT
Tolerance
Cant
Azimuth
Quadrant seat
(mils)
corrections
angle
elevation
(mils)
(mils)
(mils)
1.3
88.9
27.0
0.7
88.9
59.6
1.5
88.9
108.8
1.8
216.8
1200
88.9
0.6
54.5
177.8
1.0
177.8
120.3
2.0
177.8
1100
342.4
h. PITCH LEVEL VIAL ADJUSTMENT
1 Install perpendicularity gage (1) or two parallel bars
on M145/M145A1 telescope mount (2).
2 Level the cross-leveling fixture (3) in elevation and
cross-level.
3 Set the zeroed M1A1 gunner's quadrant (4) on the
perpendicularity gage (1) or two parallel bars.
4 Adjust pitch knob (5) until M1A1 gunner's quadrant
(4) level (6) is centered.
5 Adjust elevation handwheel until elevation counter
(7) reads zero.
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