Zinc discs, painted one side white with broad red line across the centre
1772-1773
Grooved disc, covered with chamois leather, with wooden handle
1790-1819
Grooved disc with five spherical beads attached by a thread
1761
Brass disc, with threaded hole in centre and two labels inscribed: 'G. H. R.'
Circular disc, part of the Kelvin divided ring electrometer and gauge
1861
Wooden disc with centre cut out and sample of white hair
1886
Marble Adhesion Disc, with Band and Ring Handle
Marble Adhesion Disc, with Band and Ring Handle
Brass Adhesion Disc
Brass Adhesion Disc
Plane glass disc, sherry brown
1790-1819
Three metal discs for reel unit, for Magnetophon type HTS, 1942
1942
Wooden tray with 25 thin metal discs, a ceramic cone, a lens and wooden fragment
1800-1850
14-inch Pathe 'Hill-and-Dale' disc.
Wood disc with designs on one side, and a fine textured surface on the other
1890-1913
One blackwood disc
1843-1884
Metal disc to secure Pulvermacher belts
Lead Adhesion Disc
Lead Adhesion Disc
Disc for BBC 'midget' portable disc recorder
Disc for BBC 'midget' portable disc recorder
Plane glass disc, magenta
1790-1819
Plane glass disc, cobalt blue
1790-1819
Brass disc with a small perforation plug in centre
1800-1899
Newton's disc
Two circular discs
1760-1850
Revolving disc; black velvet covered diaphragm
Circular wooden disc with inlaid wood and ivory overlapping circles
1890-1913
Stereophonic discs, 1958
1958
Programme Disks (8 inch)
Wangwriter System Disk (5 1/4 inch)
Wooden disc with 4 screws to attach to /8
Pair of brass adhesion discs
1761
Paper covered lead disc with three feet
1761
Three boxwood discs
1762
Lead disc
1761
68 thin steel discs
1790-1819
Part of Snifting Valve from large steam engine.
1790-1819
Three boxwood discs
1762
qty.10 Disk Packs
Quarter-wave disc in brass ring with outer ebonite ring
Eight mica and selenite discs for Zeiss polariscope
Stone disc for Gas heated forced draught crucible furnace
1876
Disc with engine turning on one face
Two lead adhesion discs
Three round metal discs
magnetic disc unit model 5023
Two flat black moulded discs made by Mold-Tech as sampler
1960-1980