Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 252
Fiff. 286. … andx ; then, ?i and x being of the same height, ;/ .ris a level line;and this line lying perpendicularly over r s, n x and r s must beof the same length. So, all lines on the top, drawn parallel to n.T, and perpendicularly over corresponding lines drawn parallel tor 5 on the base, must be equal to…
Carpentry · Architecture
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