English: A, the appearance of two round bars in abutment before welding.
B, the appearance of two round bars in abutment after welding.
Date
published 1911
Source
1911 Encyclopædia Britannica, vol. 28, pg. 502.
Author
Unknown authorUnknown author
Licensing
Public domainPublic domainfalsefalse
This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.