Inside Out Library
Machinery pattern making (1892)
Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 148
22 to 24 2.P. 1 •72 \ 2-68 \ FULL SIZE GEAR TEETH.From Prof. S. \V. Robinsons Templet Odontograph. 2S to 27 2: r.Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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