Master Direction Indicator, Autopilot, Type N-5, US Air Force 1951 CF-100 Here is an Omni-Bearing Selector

Here is an Omni-Bearing Selector 336A-2 as used in the 1950's era Collins Radio Navigation System VOR-102

indicating RPM for the rotor on the inner scale and rotor for the outer scale with a ratio of 9

Although in law the ICAN was placed

but requires the correct electrical input to function properly

combining Flight Director and Automatic Pilot systems used in civil aircraft such as the British ATL-98 Carvair (surplus Douglas DC-4's converted to carry passengers and vehicles) and Vickers Viscount

Master Direction Indicator, Autopilot, Type N-5, US Air Force 1951 CF-100 Here is an Omni-Bearing SelectorThis is a Master Direction Indicator for the Bendix autopilot system, Type N 5, Bendix part number 16404 1C A1, with a serial number prefix of AF 51, indicative of a manufacturing year of 1951 for an order by the US Air Force. We have yet to link it to a specific aircraft of the USAF. This indicator has 3 calibration screws along each outside edge of the dial, as well as a calibration window on its top side. It is in exceptional condition given its