Silvered and platinized glass (Foucault) (components; concave mirrors; glass mirrors; astronomical instruments)
Circular Glass Mirror, Silver and Platinised, by Leon Foucault, 1857-1868 (components; concave mirrors; glass mirrors; astronomical instruments)
Subminiature Foucault knife-edge tester (optical testing instruments; Foucault testers; personal property)
Stand for scale used in Foucault's Gyroscope Demonstration (components; demonstration models; gyroscopes; scales (rules))
Demonstration model to explain the principle of the Foucault pendulum (models (representations); demonstration models ; Foucault pendulum demonstrations)
Foucault Pendulum for demonstrating the Earth's rotation, with stand, divided arc, lapse clock, storage box (demonstration models: Foucault pendulum demonstrations)