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Triple loop Klein bottle which when cut gives a pair of five-twist Mobius strips

Mathematics

1995

Hoover 'Keymatic' model 3224 washing machine, designed and developed by Hoover Limited engineering laboratories, Perivale, Middlesex, and made by Hoover (Washing Machines) Limited, Merthyr Tydfil, Wales, with motors made at Hoover (Electric Motors) Limited, Cambuslang, Scotland, 1963

Hoover 'Keymatic' washing machine

Domestic Appliances

1963

Tin, empty, for Cow & Gate Milk Food

Domestic Appliances

c. 1956

Plaster phrenological bust, probably by William Ba

Psychology, Psychiatry & Anthropometry

1825-1835

One crystal model of hexamethyl benzene

Experimental Chemistry

1930-1970

Edison 'Concert' phonograph

Sound Reproduction

1913

Brass sextant with polished frame and limb, by Jesse Ramsden, London, England, 1790-1800. Fitted with hinged stand instead of handle, which can be fitted to threaded hole on the lid of the case. Consists of inlaid silver 129° scale (-2° to 147°) with 20’ divisions, a silver vernier reading to 20”, three filter shades (two red, one green), three horizon shades (two red, one green) and scale magnifier on swivel arm (missing). Fitted with threaded telescope bracket (with detachable dovetail) for telescope (123 mm, set focus?) inverted image, four cross-wires and sight tube (51 mm).

Brass framed sextant.

Navigation

1790-1800

Double-barrelled air pump with bell jar by Dollond family, London, England, 1780-1820

Double-barrelled air pump with bell jar

Vacuum Technology

1780-1820

Electric automatic tea maker by L.G. Hawkins and Co., London, "The Hawkins Tiffee", 1950

Electric automatic tea maker by L.G. Hawkins and C

Domestic Appliances

1950

One teapot in white and gold porcelain, 4" x 6". Obverse: Charles & Robert balloon in gold inscribed "Bon Voyage". Reverse, balloon with rudders, inscribed "Sic Itur Ad Astra".

Teapot illustrated with a ballooning scene, late 18th century.

Penn-Gaskell Collection

1783-1810

Whitehouse experimental thermograph, c. 1872.

Meteorology

1872

Periodic system model, spiral form.

Experimental Chemistry

1963

'Maltese Cross' apparatus used to demonstrate Crooke's dark space with 'Cathode rays'. 330mm wide x 510mm high x 250mm deep

'Maltese Cross' apparatus used to demonstrate Croo

Nuclear Physics

1960-1970

Unifilar variation compass and magnetometer, used by Capt. Barnett in 1841

Unifilar variation compass and magnetometer

Terrestrial Magnetism

Bottle of stilboestrol, by British Drug Houses Limited, London, England, 1930-1950

Bottle of stilboestrol tablets

Medical Glass-ware

1930-1950