Compass, Direct Reading Magnetic, Type B-16 Do-335 The glass is loose and

The glass is loose and appears to need a new gasket

This indicator appeared on the boom operator's control panel and indicated the length of the refueling boom as it is extended from the rear of the aircraft to mate with the aircraft being refueled

but loose in its frame

It is an early version as evidenced by the all-white markings

Compass, Direct Reading Magnetic, Type B-16 Do-335 The glass is loose andHere is a Direct Reading Magnetic Compass Type B 16, which was used across nearly all bomber, fighter, transport, and trainer aircraft of the US Army and US Navy in WWII. This compass was typically installed at the top of the windscreen or on the instrument panel, such as seen in B 17's, P 38's, and P 51's, and many others. This example still contains its damping fluid, and the compass card rotates freely. Cosmetically, it has seen better days. It is