1937 CLEVELAND TWIST DRILL CO. Hanging “Ready Reference” Book
Containing information useful to machine shops: decimal equivalents, drill cutting speeds, thread dimensions and tap drill sizes, pipe threads, counterbore sizes, lubricants, suggestions for the regrinding of drills, drill press problem fixes, pointing and thinning of drills and reaming hints
There are a total of 14 pages, all on seven heavy cardboard thickness cardstock sheets
Size is 6-1/4 to 9-1/2 inches
Copyrighted 1937
Ring bound with rope
Cleveland Twist Drill Co. began issuing these "Ready Reference" guides in the early 1900s as a set of three to five hole-punched cards on a brass ring for hanging, and sent them to customers on request
As they added pages, they changed to a spiral binding
CONDITION
Good to Very Good
Good to Very Good
Typical shop wear with slight satin on back cover
No other issues noted
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