Plane glass disc, sherry brown
1790-1819
14-inch Pathe 'Hill-and-Dale' disc.
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
One blackwood disc
1843-1884
Grooved disc with five spherical beads attached by a thread
1761
Wood disc with designs on one side, and a fine textured surface on the other
1890-1913
Two circular discs
1760-1850
Newton's disc
Brass disc with a small perforation plug in centre
1800-1899
Plane glass disc, cobalt blue
1790-1819
Plane glass disc, magenta
1790-1819
Revolving disc; black velvet covered diaphragm
Paper covered lead disc with three feet
1761
Brass disc, with threaded hole in centre and two labels inscribed: 'G. H. R.'
Circular wooden disc with inlaid wood and ivory overlapping circles
1890-1913
Stereophonic discs, 1958
1958
Pair of brass adhesion discs
1761
Two lead adhesion discs
Two flat black moulded discs made by Mold-Tech as sampler
1960-1980
Lead disc
1761
Three boxwood discs
1762
magnetic disc unit model 5023
magnetic disc unit model 5023
Three lead discs
1808-1847
Assaying: gold scrapings, copper fragment, silver disc
Two brass adhesion discs
1750-1850
Two coloured discs to show the compounding of white light from yellow and blue
Six Disk packs for Nova Minicomputer
circa 1976