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Radar Guidance Head for British Skyflash Missile.

Radar Guidance Head for British Skyflash Missile.

Electronic toy, game

Electronic toy, game

1996
Vertical spinning wind tunnel for testing models

Vertical spinning wind tunnel for testing models

Late C19 shocking coil electrotherapy apparatus with rheostat and milliammeter

Late C19 shocking coil electrotherapy apparatus with rheostat and milliammeter

1870-1940
Battery-powered a.c. electrotherapy apparatus by X-Rays Ltd, c.1926, in wooden case, London, English, c.1926, apparatus used at New Cross Hospital, London until 1976.

Battery-powered electrotherapy apparatus

circa 1926