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A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 146
vt:—h TAP^ ^O THDS. MS. ^ Fig. 146 MECHANICAL DRAWING 143 f <^)-^ ~ ~s : 1 1 h-- H I _ >-- P , J ^ T\ 1^ … t ^i__^ f — -M _j J 1 1 ^ 1 1 r 1 1 1 1 1Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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