Excellent rare late 19^th century gyroscope with brass counterweight on brass fluted base. Rings and gyroplate are solid brass and in very good condition. Possibly British origin.

“The Gyrocope – a modification of Bohnenberger’s machine introduced by M Foucault, is an instrument arranged to illustrate the following principles:

That inertia is a property of matter in motion, as well as of matter at rest.

That orbital and axial motion are intimately related, and that the speed of one may affect or regulate the other.

That the state of unstable equilibrium in which many bodies remain is to be explained by the fact of their rotation.

That bodies in motion endeavour to maintain their original plane of rotation.

That the power of resisting or overcoming the force of gravity possessed by shots fired from Armstrong’s gun is due to the gyratory motion given to them by the peculiar formation of the gun.

It will also illustrate the precession of the equinox.”

Dimensions: height 8,” fluted base 4” diameter, outer ring 4 ½” diameter, inner ring 4” diameter, gyroplate 3 ½” diameter, counterweight 1 ¾” diameter.

Very food condition, with some aging on brass.

Please inquire for price or purchase