Fifteen transparencies illustrating progress in design of British broadcast transmitters, 1921-1931 1921-1931
Colour transparency showing the effects produced by a cyclotron in operation Colour transparency showing the effects of cyclotron
Optical transparency, glass, damaged by hail under experimental conditions Optical transparency damaged by hail 1965-1980
Optical transparency, glass, damaged by hail under experimental conditions Optical transparency damaged by hail 1965-1980
Optical transparency, glass, damaged by hail under experimental conditions Optical transparency damaged by hail 1965-1980
Optical transparency, glass, damaged by hail under experimental conditions Optical transparency damaged by hail 1965-1980
Twenty-three transparencies of electric arc welding equipment, and examples of welded work. Twenty-three transparencies of electric arc welding equipment
One transparency of Archdale Radial Drilling Machine. One transparency of Archdale Radial Drilling Machine
Three-dimensional vectograph transparency. [Also diagram showing principle of operation N. O.I. Neg.1076/52] Three-dimensional vectograph transparency
One transparency showing a B.S.A. No.48 single-spindle automatic screw machine. Transparency showing automatic screw machine
13 sets of slide transparencies for Ives' stereoscopic Kromskop. Slide Transparencies for Ives' Stereoscopic Kromskop
Transparency:- Aswan Dam, facing East, general view, after completion of thickening and heightening, alternate sluice sets discharging (1912) Transparency:- Aswan Dam
Transparency:- Aswan Dam, facing East, subsidence of floods flowing over the previous seasn's work, 7.12.1900 Transparency:- Aswan Dam
Transparency:- Aswan Dam, downstream face, grouting pipes in work of thickening original dam, 7.1.1909 Transparency:- Aswan Dam
Transparency:- Aswan Dam, downstream face, insertion of cast iron linings for 5 sluices, Bab-el-Sogheir channel, 2.6.1900 Transparency:- Aswan Dam
Transparency:- Aswan Dam, facing East, sluice construction at the Thirmosia channel, 3.4. 1900 Transparency:- Aswan Dam
Transparency:- Assiut Barrage, facing East; roadway and swing bridge over navigation lock Transparency:- Assiut Barrage
Transparency:- Esna Barrage, facing West, upstream ends of partly completed piers with Nile flowing through, 17.3.1908 Transparency:- Esna Barrage
Transparency:- Esna Barrage, facing West, downstream ends of piers quite dry within the sudds, 8.6.1908 Transparency:- Esna Barrage
Four transparencies of James Watt's Workshop, prepared from negatives taken at Heathfield by J. Willoughby Harrison when the contents of the room were being moved to South Kensington, December 1924. 8 1/2" X 6 1/2", framed in mahogany case Four transparencies of James Watt's Workshop
Transparency:- Assiut Barrage, facing West; construction of foundation and masonry piers Transparency:- Assiut Barrage
Photo-transparency on opal glass cemented to glass block (portrait of Andrew Pritchard, 1870. Photo-transparency on opal glass cemented to glass block 1870
Five (5) Dufaycolor transparencies, 2 x 2 ins., 1936 Five (5) Dufaycolor transparencies, 2 x 2 ins., 1936 1936
Transparency: 'T.S. Mauretania' with 'T.Y. Turbinia' alongside, 1907. Transparency: 'T.S. Mauretania' with 'T.Y. Turbinia' alongside
24 autochromes, 30 Dufaycolor images and 48 transparency copies from the Vienna Technical Museum, together with books, manuals and instruments, 1930-1939. 24 autochromes
Colour transparency, by Bernhard Baer, "Hand and Candle", 1948. Allsco Safety film Colour transparency
ten transparencies 10" x 12" of Oxy-Acetylene welding and cutting machines:- High pressure welding outfit, diagram. Low pressure welding outfit, diagram. High pressure cutting outfit, diagram. Low pressure cutting outfit, diagram. Oxygen cylinder manifold. 55" Universal oxygen cutting machine. 20" Universal oxygen cutting machine. 20" Portable oxygen cutting machine. Straight line steel and joist cutting machine and Bull Head rail cutter. Portable straight line cutting machine (motor driven). ten transparencies 10" x 12" of Oxy-Acetylene welding and cutting machines:- High pressure welding outfit
One transparency showing optical grinding and polishing machine (plate from "Phil. Trans.", 1744, Vol 41). Transparency showing optical grinding and polishing machine