TM 5-6675-316-14
Table 5-1.
OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Cont
B . Before
D - During
A - After
lTEM
NO.
1
lN-
TER-
VAL
B
W - Weekly
M - Monthly
Q - Quarterly
AN - Annually
S
- Semiannually
BI
- Biennially
(Number) - Hundreds of Hours
ITEM TO BE INSPECTED
PROCEDURE
ZOOM STEREOSCOPE 240R - Cont
Inspect Stereoscope - Cont
16. Tighten rear lockscrew finger tight.
17.
18.
19.
Move rhomboid arms and position over
identification points on stereo-pair
photographs.
Check for free movement.
Set rhomboid focus knobs to index point
(black dot on knob and white dot on rhomboid
arm are alined).
Turn zoom power-changer knob to left and right.
Check for equal magnification change.
For Readiness
Reporting,
Equipment Is
Not Ready/
Available If:
No change
in magni-
fication.
5-9
