Received this old drawing this morning to quote the parts, it includes a few symbols that I am unfamiliar with. This is a photo of the drawing sent by the customer so the explination may be on the drawing yet not in the picture as taken.
There is a 42 MM thread 12 MM long then an undercut 3 MM wide up to a 44 MM diameter. After the undercut there are dotted dimension lines labeled 1 and 3, I do not see any features that they apply to.
2 of the inside surfaces have three triangles attached to them which I suspect is a surface finish callout. The dimensions circled in blue are the changes that are needed, the 3MM diameter becomes 7 MM and the 4 MM diameter becomes 9 MM
There is a 42 MM thread 12 MM long then an undercut 3 MM wide up to a 44 MM diameter. After the undercut there are dotted dimension lines labeled 1 and 3, I do not see any features that they apply to.
2 of the inside surfaces have three triangles attached to them which I suspect is a surface finish callout. The dimensions circled in blue are the changes that are needed, the 3MM diameter becomes 7 MM and the 4 MM diameter becomes 9 MM