The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 32
ngles to c a. In squaring the foundation of a build-ing, or laying-out a garden, a rod and chalk-line may be usedinstead of compasses and ruler. 7^.— To let fall a perpendicular near the end of a line. Let c, {Fig. 30,) be the point above the line, c a, from which the perpendicular is required to… … 76.— To make an angle, (as e df Fig. 33,) equal to a givenangle, (as b a c.) From the angular point, a, with any radiusdescribe the arc, he; and with the same radius, on the line, d e, 20 AMERICAN H0USE-CARPB:NTER. and from the point, d^ describe the arc, fg-; take the distance, b c, and upon gj…
Carpentry · Architecture
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