Two flat black moulded discs made by Mold-Tech as sampler, England, c. 1970 (both identical) Two flat black moulded discs made by Mold-Tech as sampler 1960-1980
Three lead discs, from apparatus to demonstrate the mechanical advantage of a screw, by Robert Brettell Bate, Poultry, City of London, England, 1808-1847 Three lead discs 1808-1847
Assaying: gold scrapings, copper fragment, silver disc Assaying: gold scrapings, copper fragment, silver disc
Lead disc, with three feet, one hole, one socket, with marbled paper on top and bottom Lead disc 1761
Data Products Corp, magnetic disc unit model 5023, serial No. 56514, with spare heads and instruction manual magnetic disc unit model 5023
Disc, ceramic, Great Western Railway, from Royal Saloon, white ceramic disc labelled "SLOW". Ceramic disc, Great Western Railway
Disc, ceramic, Great Western Railway, from Royal Saloon, plain white ceramic disc. STEAM Audit Dec 2015 - item is ivory not ceramic Ceramic disc, Great Western Railway
Spinning-disc fitment for distributing granular material and seeds from Z.37 agricultural aircraft Spinning-disc fitment for distributing granular material and seeds from Z.37 agricultural aircraft
Two coloured discs to show the compounding of white light from yellow and blue. Issued by Lord Rayleigh to his Royal Institution audience. (B 4401 A 43 277) R 17575 Two coloured discs to show the compounding of white light from yellow and blue
Six disk packs for Nova 2/10 minicomputer. Manuf. by Data General Corp. C.1976. Six Disk packs for Nova Minicomputer circa 1976