Tachometer, Dual Engine, Electric, Type E-14, AN5530-2 Engines 1 & 2 Canberra but could be removed)

but could be removed)

The pointer floats a bit

It has an overhaul stamp on the rear case from Naval Air Station Penscacola (FL) dated Aug 1959

since it has Russian Cyrillic lettering on its face

see photos

Tachometer, Dual Engine, Electric, Type E-14, AN5530-2 Engines 1 & 2 Canberra but could be removed)Here is a WWII era dual engine electrical Tachometer measuring engine revs up to 4500 RPM. The Type E 14 AN5530 2, made by Friden part number 8DJ19 was used across multi engine US military aircraft during WWII, such as versions of fighters P 38 Lightning and P 61 Black Widow, medium bombers B 25 Mitchell and B 26 Marauder, and paired with one more dual tachometer for engines 3 & 4 in heavy bombers such as B 17 Flying Fortress, B 24 Liberator, and B 29