Compass, Aperiodic, US Military Aircraft, Pioneer 1811-1-D C-45 Here is a Remote Indicating

Here is a Remote Indicating Compass

per its parts manual

5 inch deep

The Sensitive Altimeter displayed altitude using 3 pointers

but could probably be recalibrated with the compensator screws

Compass, Aperiodic, US Military Aircraft, Pioneer 1811-1-D C-45 Here is a Remote IndicatingThis appears to be a post WWII Direct Reading Aperiodic Compass used at the navigators station in US military aircraft. Made by Bendix, part number 1811 1 D. It appears to have never been put into service judging from its superb condition. An aperiodic compass, after being deflected, returns by one direct movement to its proper reading, without oscillation. It is similar to a WWII era D 12 compass, which was typically mounted on the navigator's desk.