Tachometer, Victometer Centrifugal, 1920s USSR This is an excellent specimen

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

Likely made by Horn

depressing the lower right knob

dated Oct 29

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

Tachometer, Victometer Centrifugal, 1920s USSR This is an excellent specimenThis 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