Tachometer, Victometer Centrifugal, 1920s USSR made by Bendix and labeled

made by Bendix and labeled for engines #1 & #2 and 3 & #4

This is an excellent specimen of the Contact Altimeter (Kontakt-Hohenmesser) Fl

We have not yet identified the type of RCAF aircraft which may have used this indicator

such as the B-17 Flying Fortress (see image illustrating the location of the co-pilot's regulator from the B-17F flight manual dated 1943)

The glass is intact

Tachometer, Victometer Centrifugal, 1920s USSR made by Bendix and labeledThis is a WWI or Post WWI vintage aircraft or laboratory tachometer "Victometer" made by the Jos W Jones Co. This is a centrifugal tachometer: as the rotation of the engine shaft rotates a cable attached to the case, flyweights rotate around an internal axis. The weights move outwardly due to centrifugal force, which pull a brace attached to the spring loaded pointer. As the brace is pulled by the centrifugal force of the weights, the pointer is