Ammeter, 50mA, WWII Japanese Navy Aircraft Italian it is in exceptional condition

it is in exceptional condition for its age

This is a Cold War-era Airspeed Indicator

changing the yellow/blue indicator

used for the Twin Compass System

The floating ball indicator no longer contains damping fluid

Ammeter, 50mA, WWII Japanese Navy Aircraft Italian it is in exceptional conditionThis is a Japanese Ammeter, 50mA. It is presumed to be a WWII era indicator used in aircraft of the Japanese Navy, judging from the anchor symbol on its face (center). This has not been verified. Aircraft that may have used this have not yet been identified. It is in good condition given its age. Measures ~3. 5 inches diameter and ~1. 5 inches deep. The glass and case are intact and the lettering is distinct.