Voltmeter, 1500V, WWII Japanese Aircraft Constellation which is designated by a

which is designated by a vertical dash on this one and by a small aircraft silhouette on the I-65)

With a serial # AC42-670

whereby a red light would illuminate on the panel if this temp was reached

the swept-winged Cougar replaced the straight-winged F9F Panther (pre F9F-6) providing greater airspeed and performance

dated 1954

Voltmeter, 1500V, WWII Japanese Aircraft Constellation which is designated by aThis is a Japanese Voltmeter, 1500V. It is presumed to be a WWII era indicator used in aircraft of the Japanese Army or Navy. 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 2. 5 inches diameter and ~1. 5 inches deep. The glass and case are intact and the lettering is distinct.