Gear Tooth Shapes, published by The Fellows Gear Shaper Co.The sub-title of this little gem reads, ''A Study of the Fundamental Principles of Involute Gearing in an Endeavor to Find a Suitable Standard Tooth Form and Pressure Angle.” Illustrated with 26 crisp line drawings.

From a paper presented by Fellows Gear Shaper Co. chief engineer, Mr. E.W. Miller, before the meeting of the American Gear Manufacturers Association, October 1921, and reprinted as an article in American Machinist magazine in January and February, 1922.

Please note this is a new photoduplicated reproduction, not an original.