TM 5-6675-321-14
3-3. TECHNICAL PRINCIPLES OF OPERATION.
3 - 3 . 1 G e n e r a l .
Operator manually moves roll of aerial film between film spools
by turning crank handles. Film is viewed on lighted viewing surface.
3 - 3 . 2 E l e c t r i c a l S y s t e m .
Power switch controls 120 V, 60 Hz power for
b a l l a s t t r a n s f o r m e r t o l i g h t t w o f l u o r e s c e n t l a m p s .
3-3
