Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 54
Fig. 114. DRAWING INSTRUMENTS. 37 … Fig. 115. Slink, half the thickness of the board, over the entire back. These groovestake the transverse strength out of the wood and allow it to be controlled bythe battens, leaving at the same time the longitudinal strength of the woodnearly unimpaired. To make the two working edges perfectly…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
