TM 5-6675-320-14
2-3. TECHNICAL PRINCIPLES OF OPERATION.
2-3.1 G e n e r a l.
Operator manually
by turning crank handles. Film is
moves roll of aerial film between film spools
viewed on lighted viewing surface.
2 - 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
ballast transformer to light two fluorescent lamps.
2-3
