Flap Position Indicator, 0-45 Degrees, Bendix Type 20000-11M-4 Halifax When flying over the transmitter

When flying over the transmitter

which in turn would transmit these signals to smaller repeater indicators located at other positions such as the pilots instrument panel

the degree markings internally would show zero toward the nose of the aircraft

in addition to the flight manual's instructions for its use

The C-11 displayed engine RPMs in hundreds

Flap Position Indicator, 0-45 Degrees, Bendix Type 20000-11M-4 Halifax When flying over the transmitterThis is a vintage Wing Flap Position Indicator made by Bendix. The instrument is in exceptional condition for its age, likely 1940 50's vintage, likely for a large multi engine aircraft. The dial markings are clear and the glass and case are intact. See photos. Measures 3. 25 inches diameter and ~3 inches deep.