TM 5-6675-313-14
4-3. TECHNICAL PRINCIPLES OF
OPERATION.
4-3.1 General.
Operator manually
by turning crank handles. Film is
moves roll of aerial film between film spools
viewed on lighted viewing surface.
4-3.2 Electrical System.
Power switch controls 120 V, 60 Hz power for
ballast transformer to light two fluorescent lamps.
4-3
