Links from this page take you to various drawings/diagrams of interest to Irwin owners. Additional details are available from Gene Gammon by phone at 727-644-8009 between 9am and 5pm east coast time, or via the Internet at the link on the bottom of this page.
Standards form the basis of all engineering tasks. The two links above connect you to a listing of Irwin standards, prior to 1980.
The first link is for Irwins 28, 30, 34, and 39.
The second link for Irwins 37, 42, 43, 44, and 52.
As with any long lasting engineering program, changes were made during the life-cycle of the product. Please check with Gene regarding updates and later production runs. He can also provide advice on suitable substitutions for items no longer available