2-839-342 - Heritage Art/Heritage Images

3-1/8 in. d. range 10-60 in. mercury. The Autosyn was a system developed by the Eclipse-Pioneer Division of the Bendix Aviation Corporation to eliminate the cumbersome plumbing required for instrumentation in increasingly large aircraft. Instead of having many feet of piping, vulnerable to blockage or leaks, the autosyn system used a transmitter located at the source of the input that converted the mechanical or electro-mechanical impulses from a sensor into electrical signals that were sent to a standardized indicator on the instrument panel. The indicator would have a simple easily mounted face that was appropriate to the input sensed by the transmitter.