Manufacturer: Curtiss (United States)
Type: Observation, Attack
First flight: 1920s
Cockpit of Curtiss A-3B (probably S/N 30-1), taken May 27, 1930. Note the center (primary) panel has water and oil temp, engine rpm, oil and gasoline pressure gauges. The air speed gauge is located on the right side (secondary) panel.
U.S. Air Force photo
