Tachometer, US Navy Mark V, Kollsman 621KN-04, 88-I-2500, SBD, TBM, F6F, PBY Seagull This is a Beam Compass

This is a Beam Compass Indicator

The side label is partially removed

The Pilot Director Indicator (PDI) was used during WWII in bombers of the US Army Air Force

and another full rotation to 4000 RPM

Here is a capacitance-type Fuel Quantity Indicator displaying aircraft fuel quantity up to 5400 lbs

Tachometer, US Navy Mark V, Kollsman 621KN-04, 88-I-2500, SBD, TBM, F6F, PBY Seagull This is a Beam CompassHere is a very nice example of the US Navy Mark V WWII post WWII era electric tachometer, made by Kollsman (part number 621KN 04), as used in aircraft of the US Navy such as the SBD Dauntless Dive Bomber, the TBM Avenger Torpedo Bomber, the F6F Hellcat Fighter, and the PBY5A Catalina Seaplane (which used 2). (See photos of the SBD and TBM instrument panels from their WWII era flight manuals showing the instrument location). It is in fine condition