Science & Mechanics Instruments, New York, NY; Darkroom A-3 photometer
Lens
Science & Mechanics Instruments, New York, NY; Darkroom A-3 photometer
1972
Metal and plastic
Overall: 6 × 7 1/4 × 2 3/4 in., 2.4 lb. (15.2 × 18.4 × 7 cm, 1.1 kg)
Gift of Marion Faller, 2012
DescriptionBlack and gold, rectangular, electrically powered photometer with light sensitive densitometer, dial lamps, battery tester, range switch, and sensitivity control.
Inscriptions Printed in black on photo meter dial on front of photometer: 0, 10, 20, 30, 40, 50, PHOTO METER, Science & Mechanics, Darkroom Model A-3 / Printed in black on control panel on front of photometer: DIAL LAMPS, ON, OFF, OFF, 1, 2, 3, 4, RANGE, BATTERY TEST, OFF, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 / Engraved in metal on bracket on top of photometer: KEYSTONE ELECTRONICS N.Y. 12, N.Y.
