The
Warner & Swasey Company was an American manufacturer of
machine tools,
instruments, and special machinery. It operated as an independent business firm, based in
Cleveland, from its founding in 1880 until its acquisition in 1980. Originally founded as a partnership in 1880 by
Worcester Reed Warner (1846–1929) and
Ambrose Swasey (1846–1937), the company was best known for two general types of products:
astronomical telescopes and
turret lathes. It also did a large amount of instrument work, such as equipment for astronomical
observatories and military instruments (
rangefinders,
optical gunsights, etc.). The themes that united these various lines of business were the crafts of
toolmaking and instrument-making, which have often overlapped technologically. In the decades after World War II, it also entered the
heavy equipment industry with its acquisition of the Gradall brand.