Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,151 pages of information and 233,681 images on early companies, their products and the people who designed and built them.
of 27 Charing Cross Road, London, WC2. Factories: Dalston. Telephone: Gerrard 4931. Cables:"Pyro, Westrand." (1929)
of 53 Wigmore Street, London, W1. Telephone: Welbeck 3215. Cables: "Pyro, Wesdo, London". (1947)
A. Adams and Co was a camera maker based in London. It made a wide range of cameras, from the handsome clam-shell folder Natti to the big wooden Studio Minex. For the average amateur it made the Vesta and the Verto folders, and the Vaido plate cameras. Under the Minex name it offered a series of SLR cameras. The company also made customized cameras. 
Pre-WWI: High-class photographic and scientific apparatus.
WWI: Maker of heliographs, clinometers, photographic apparatus. Also experimental wood and metal work. Periscopes. Signalling apparatus. Rheostats.
1929 Listed Exhibitor - British Industries Fair. Manufacturers of Highest class Photographic Apparatus. Inventors, Patentees of Reflex, Folding Plate and Film, Stand and Studio Cameras. Enlargers, Lanterns and Scientific Instruments of all descriptions. On the King's Roll. (Stand No. O.36) 
1947 Listed Exhibitor - British Industries Fair. Manufacturers of Highest Grade Reflex Cameras, Tripod Stands. Amateur and Professional Enlargers, General Photographic Apparatus all Produced by Highly Skilled Craftsmen by hand. Catalogues on Application. (Olympia, Ground Floor, Stand No. A. 1082)