Browse Items (3473 total)

synthetic inslated box with leather strap; glass-plated scale on front; top scale reads 0-100 milliamps; bottom scale reads 0-50 amps; face plate stamped Crompton and Co Chelmsford; two terminals on top

Wooden base with ebonite insulator holding top plate of circular variable capacitor. Evidence of solder connections to edge bottom plate of handle.

Flat magnetic strip on tripod stand through which an axial current can be passed. Rotation takes place because of the force between the current and the permanent field of the magnet. The first primitive electromagnetic motor ( Faraday ) but a…

IDL amplifier discriminator "Amplifier-selector 1830". 3 dials: input, discriminator bias, channel width; voltmeter 0 - 30 V.by Isotopes Development Ltd model 1830A no. 113. For nucler counting. Blue crackle metal case.

mounted on a wooden base. Originally drove two diameters of belt, but amateurishly modified by the addition of a rough propeller.

On top in white ' TYPE 4190A / MICROHENRYS No. 128,618 ' . 2 chrome terminals on top. In wooden box.

lens for University Television camera. Zoom 10x18J. 1/4 x. Glass lens with plastic surround. In red and cream cardboard box. Located with TV camera.

Demonstration of dependence of rate of flow eith head of liquid. A cylindrical metal vessel standing upright on three feet. There are three equally spaced taps mounted one above another. A tube attachment inlet is fitted at the base and a glass…

Wooden box with 4 steel terminals (at corners) with large iron central terminal. ' TYPE 4309A ' Patent dated 22/05/1930.