Common sight errors, continued
RESTRICTED
C.
2.
Car be caused by improper erection of
transverse hair to vertical.
Bottom of gyre tilted to rear when
transverse hair was erected.
2: Front of precision mirror was high
b.
Faulty technique in calibrating.
Bottom of
syro tilts to front when bomb-
Ing•
Fore and aft bubble is high to rear.
2:
3)
Faulty
technique of bombardier.
Abnormal rate of precession causing
bottom of gyro to move to front rapid-
ly.
C.
Dirt
(piece of dirt) on one of sheaves
which bears on cable when transverse
hair being erected but does not bear on
cable when optics are positioned at AR
angle or wider.
3.
Bombardier
lacks knowiedge of synchroniza-
tion and
sets in too much rate.
Left deflection errors.
1.
2. Transverse bubble high to the left with gyro
in true or are i gi to th
Dovetail misaligned counter clockwise.
3.
Improper erection of fore and aft hair to
vertical.
Bottom of gyro was tilted to left when
fore and aft hair was erected.
Right side of
precision mirror high
when fore and aft hair being erected to
vertical.
Stabilizer misalianed counter clockwise.
Gyro not properly
balanced
causing a rapid
rate of precession of bottom of gyro toward
right.
Fore and aft balancing weights loose
and
creeping
7. Goose tot
to the rear.
Cross, trail clamp lever turret head screw
loose; top of telescope creeping left.
Right detection errors.
1.
Dovetail misaligned clockwise.
2. Transverse
bubble high to the right with
gyro in
true vertical.
3.
Improper
erection of
fore and aft hair to
vertical.
a.
Bottom of gyro was tilted to right when
fore
and aft hair was erected.
Left
side of precision mirror high when
fore
and aft hair being erected to ver-
tical.
wher
hair
in
vertical.
a.
b.
5.
6.
7.
D.
b.
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