Inside Out Library
Machinery pattern making (1894)
Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 200
18 to 19 2. r. … 20 to 21 21 r. 22 to 24 2. P. 2-68 FULL SIZE GEAR TEETH.Jrom Prof. S. IV. Robinsons Templet Odontograph. 14: 5. r.Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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