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Tuning-fork of 870 s. v. to demonstrate Doppler's principle

Interference spectroscope according to Gehrcke

Camera Lucida according to Wollaston

Shunt

Receiver - glass-shade for air pump plate

Gyroscope according to Fessel

Rectangular glass tank / aquarium

Vessel for ice-calorimeter according to Bunsen

Loudly speaking precision telephone

Ammeter