Machine drawing, a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator
A 1920 American Technical Society textbook by Charles Lewis Griffin and Charles Clyde Adams, teaching Chicago trade and correspondence students standard drafting conventions through complete detail sets for a duplex pump and a direct-current generator. Plates are line drawings in plan, section and elevation with hatched cutaways, centerlines, dimension strings and boxed title blocks, useful as technical linework and lettering.
