Presentation model of actual size Sinclair cathode ray tube to be worn on the wrist on circular plastic stand 1975-1980
'Emiscope' 5 inch television picture tube, unused and in original box, 1939. Incorporated in Marconiphone 706 television receiver, 5" screen, 1938 (Inv 1986-715). 'Emiscope' 5 inch television picture tube, 1939 1939
Iconoscope, made by Dr V K Zworykin in his laboratory on 9 November 1931, successfully tested the next day. Prototype Iconoscope tube, 1931 1931-11-09
RCA metal-cone cathode ray tube for colour TV type No. 21 AXP22A s/N AC32807[and a half] RCA metal-cone cathode ray tube for colour television
14 inch RCA Cathode Ray Tube to be used in conjunction with 'Colortel' mechanical colour adaptor. Made by RCA, USA, c. 1955. Part of the Donald Fleming Collection of North American television receivers. The Colortel adaptor could be fitted onto the front of the monochrome television set to convert NTSC-compatible monchrome set to colour using a field sequential disc. This RCA Radiotron CRT Tube is believed to have been included to swap out with the standard and brighter 24 inch tube in the monochrome television to prevent screen burn when using the ‘Colortel,’ which focussed the bright and colourful images on a small section of the screen. RCA Radiotron Cathode Ray Tube Col-R-Tel mechanical colour convertor circa 1955
12 inch television tube, and likely gives a 10 inch televsion screen when mounted in set. In original cardboard container. Type: Emiscope 3/31. Manufactured by The Gramaphone Company. cathode ray tube
Television camera tube. 4 1/2" image orthicon television camera tube. Made by English Electric Valve Company c 1955. Television camera tube. 4 1/2" image orthicon television camera tube circa 1955
Cathodeon monicon tube with test card "C" (BBC version). Serial No. 387. Cathodeon Monicon tube with test card "C" (BBC version)