Wooden base on rectangular corner feet with two insulated handles (wooden ends) on light green glass stems - central wooden pillar has table missing on top.
4 black metal plates joined together by 8 white rods through all 4 plates. In between the plates are various wires also connecting them and outside the plates on one side are resistors also connecting the plates. There is one grey piece of metal on…
Glass plates forming prism sides can be adjusted independently from vertical to 50 on scale calibrated in divisions of 1 degree. Feet adjustable. Prism mounted above spillage tray (approx 170 mm diameter) on tripod base.
modular valve unit (late 1950s?) Black aluminium case with rear connector and valves projecting and covered in screening cans. Counting unit Racal Eng. Ltd. Type no. CU 542 D Ser. No. N1681. 4 valves: 3 off 12AU7/ECC82; ECC82/12AU7
Abbe refractometer for measuring the refractive index of liquids in range 1.3 to 1.7. Accompanied by manufacturers manual. Grey painted brass. Stamped M46317/58479 - presumed model and serial number.
6 assorted printed circuit boards that accompanied ABDNP201341a, illustrating technology used in 1987. Includes 1 power board with 12 power transistors, relay and piggy-back board, 4 boards approx 230 mm by 290 mm, one including mixed…
Black cardboard box with a direct drive dial inside wrapped in polythene and tissue paper. Direct drive dial is a large grey metal disc with a scale round the outside from 0 to 190 and a black plastic knob on top. Included in the box is a dispatch…
