Circular permanent magnet with annular gap 1 3/8" to 1", part of Oliver Lodge’s microphone amplifier or relay, 1898 (British patent 9712 of 1898), a precursor of the moving-coil loudspeaker Circular permanent magnet with annular gap 1 3/8" to 1"
Three large powerful ring-shaped permanent magnets formerly part of an eddy current demonstration Three large powerful ring-shaped permanent magnets 1940-1959
Compound horseshoe magnet, comprising eight individual magnets each 12 inches high and screwed together, with keeper Compound horseshoe magnet 1900
Early cobalt steel permanent magnet with mild steel pole pieces, for moving coil loud speaker Early cobalt steel permanent magnet with mild steel pole pieces
Early cobalt steel permanent magnet for moving coil loud speaker (solid magnet steel) Early cobalt steel permanent magnet for moving coil loud speaker
Pair of bar magnets each about 75cm long , with keepers in fitted mahogany case Pair of bar magnets each about 75cm long 1851-1900
Electromagnet or self-inductance, consisting of a vertical solenoid mounted on a wooden base and fitted with a loose iron core Electromagnet or self-inductance
Fridge magnet, champagne glass shape, made by The Niche Ideas Company Champagne glass shaped fridge magnet circa 1997
fridge magnet, 'Wallace & Gromit' shape, made by Giftware International Wallace & Gromit fridge magnet circa 1997
Two colbalt-samarium magnets, each is a disc 1/2" diameter x 1/8" thick Two colbalt-samarium magnets 1972
Quadrupole magnet from the Tevatron accelerator, made by Fermilab, Chicago, Illinois, USA in about 1980 Quadrupole magnet from the Tevatron accelerator, Fermilab 1980-1982
Promotional magnet, Union Railways / Joint Ventures, two blocks with ‘unii’ and ‘ion’ marked on either piece, boxed. Promotional magnet Union Railways
ALCOA magnet, to tell tin from steel cans, 1980s, made (P.O. Box 36) MO (Missouri), Ellisville ALCOA magnet 1980-1989
fridge magnet, milk bottle shape, made by George Wilkinson (Burnley) Milk bottle shaped fridge magnet circa 1997