Browse Items (3473 total)

Provides approx. 1200 Volts at a few hundred Amps . One of the largest vacuum tubes. Pool of mercury in the base acts as a cathode, feeding the 3 side-arm anodes, one for each phase of a 3-phase supply. Three intermediate grids provide some control…

Eight cowrie shells strung together (six back to back, two face to face) and a feather on a knotted cord, which together form a 'message'. Translated as: 'I keep my ears open to hear from you. Though a long journey yet I hope and should like to see…

Metal lock shaped item with hole in centre and spring

Iron casing with lens and pin hole aperture at either end. 2 other holes on top and bottom.

2 copper cones with a brass strip of metal round the smaller end. Heat screens for White's differential thermopile, item 201183a

metal square frame. Probably missing from something

Unsigned but very similar to the specimen in the George III collection. Complete with ivory-sided compass with transparent base. Hinged box has cut-outs for five metal hearts, only four are contained in the box. Various non magnetic metals. Gold…

Video of a house, inspired by M.R. James's "The Mezzotint" for the exhibition "Fear & Fascination: A Gothic exhibition"
M. R. James (1862-1936), the “father of ghost stories”, was a master of quiet horror. He built suspense through the gradual…

Centre-zero scale : 120 - 0 - 120 in divisions of 2 microamp. 2 terminals. Circular platform on top ' UNIPIVOT / ZERO ADJUSTMENT / DEPRESS & TURN / TO CLAMP '. With resistor bridge logo.