Welding symbols and instructions for their use ...
By: prepared by Committee on Symbols; approved by Board of Directors, December 11, 1941.  Recommended by the American Welding Society to the American Standards Association for adoption as American standards ...
Contributors: American Standards Association.
Publisher: American Welding Society
Published: 1942
Place of publication: New York
Language: eng
Number of pages: 26
Subjects: Welding
Notes: "The ... symbols given herein ... supersede the Society's former symbols which were published in bulletin form in 1929 and revised in February 1935, September 1939 and October 1940."