Reid and Sigrist
of Shannon Corner, Kingston-by-Pass, New Malden, Surrey. Telephone: Malden 3272-5. Cables: "Reidsig, London". (1947)
- 1927 Reid and Sigrist Ltd was set up by Major G. H. Reid and Fred Sigrist, as a manufacturer of precision instruments, including those for aircraft.
- 1935 AA image in this page. 
- 1937 Aeronautical and electrical engineers; instrument manufacturers. 
- 1939 See Aircraft Industry Suppliers
- 1945 The Allies confiscated all German patents under the Control Council Law of October, and subsequently, made them freely available.
- 1946 Having studied plans and parts for the pre-war Leica lllb, Reid made a number of prototypes.
- 1947 The Reid camera was announced in the British Journal of Photography. Due to government interference, and problems with subcontractors, no cameras reached the market for a few years.
- 1947 Listed Exhibitor - British Industries Fair. Manufacturers of Cameras, Electronic Balancers, Optical Projectors and Surface Illuminators, Gyroscopic Instruments. (Olympia, Ground Floor, Stand No. A.1116) 
- 1951 Production of the 'O' cameras began.
- Reid I and Reid II cameras were simplified versions of the Leica III.
- 1958 Reid I introduced. Although advertised as available to the general public, it was aimed specifically at government bodies (military and police).
- 1964 Production of cameras ceased; tools and spares were sold to A. W. Young of London.
- 1970 Decca closed down the camera-making activity.
Sources of Information
-  Image courtesy of Aviation Ancestry
- 1937 The Aeroplane Directory of the Aviation and Allied Industries
- 1947 British Industries Fair p230
- The Times, 9 February 1955