Browse Items (3473 total)

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

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

Used with BBC computer. no makers name; with phone connection wire

IDL Pulse Height Analyser "Pulse Height Analyser 1870" 2 Controls: Auto/Manual, Threshold; 1 channel width switch; with voltmeter 0 - 50V by Isotopes Development Ltd 1870A Serial Number 76. Blue crackle metal case.

mixture of items from 3 light bulbs to a block of wood

4 anamorphic drawings on circular sheets of waxy paper. Small hole in centre of sheets:
1) Bird of paradise in blue, red and green.
2) stork in black and white with red beak and legs and green frog in its mouth
3) diagram of four overlapping…

IDL Scaler 1800, 4 Push Button Switches: Start, Stop, Reset, Test; 5 Dekatrons; Type: 1800C, Serial No. 178, a range of inputs

a substantial soft iron core wound with 10 coils (5 on each leg) wired in series aiding and joined to a copper bus and two brass thumbnuts. A horseshoe 'keeper' is separate