'Diamond 2' dental chair, American, 1925.
© Science Museum / Science & Society Picture Library
Dental chair made of iron and vulcanite, with padding and leather upholstery, hard moulded, made by the S S White Dental Manufacturing Company, Philedelphia, USA. The Diamond 2 chair was the first to have a non-sprung anatomically shaped seat, and was manufactured from 1925 to 1935. Dimensions: length 1110mm; width 570mm.