Significance
Typical of an altimeter fitted to an aircraft
Physical description
Black metal cylindrical body with glass face and clock arms. Face is numbered 1 to 0 (100 to 1000 ft) also 1000 ft and 10,000 ft scale. Preset knob and preset widow and readout. Pressure tube fitting on back
Inscriptions & markings
Altitude 100, 1000, 10,000 ft Kollsman Instrument Division. Elmhurst New York