The American house-carpenter; a treatise on the art of building, and the strength of materials (1873)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 378
Fig. 81T. Fig. SIS. and x••; then, n and x being of the same height, n x is a evel 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 nx, and perpendicularly over corresponding lines drawnparallel tor s on the base,…
Carpentry · Architecture
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