Compass, Direction Indicator, Kollsman Type 488C-01-615 Poly-Plane Compensator ME-109 25in diameter and ~5in deep

25in diameter and ~5in deep

and therefore can only share what we can physically examine

The angled display shows the 'tulip'

Here is an aircraft Fuel Pressure Gauge

The center knob adjusts the indexing indicator for the view angle of the pilot

Compass, Direction Indicator, Kollsman Type 488C-01-615 Poly-Plane Compensator ME-109 25in diameter and ~5in deepThis appears to be a 1930's era Compass and Directional Indicator, made by Kollsman. We've not seen one until this specimen was found, have failed to locate any documentation on it, and therefore can only share what we can physically examine. It is a large instrument, 5. 5 inches diameter by ~4. 25 inches tall and 4lbs in weight. It is comprised of a liquid filled compass, which indicates with the thin inner pointer, and a larger direction indicator