File:Dwight Durkee lathe speed plate Popular Mechanics January 1950.PNG

Table Listing Spindle Speeds Mounted on Lathe Headstock. For turnings that require critical surface speeds, it is convenient to be able to determine the various spindle speed of your lathe at a glance. This can be done by stamping the spindle speeds on a metal plate and fastening the plate to the headstock with one of the machine screws used to hold the cover in place. Dwight Durkee, Jr., Cupertino, California, Popular Mechanics, January 1950