Browse Items (3473 total)

Circular magnifying lens on brass stand. Can rotate and can be extended in height.

2 string (wire) sonometer with screw tension. Dovetailed box with 4 sets of ornate slots between bridges. Later addition of small brass pulley on one end and brass hook on other to take wire with weights. Probably purchased by Prof Thomson.

Brass compass with silvered dial; outer scale in degrees anticlockwise; inner scale N/NE/E...NW. Needle locking handle.

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

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…

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.

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

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

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.

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…