Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 34
t angles 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. 75.— To let fall a perpendicular near the end of a line. Let e, {Fig. 30,) be the point above the line, c a, from which the perpendicular is required… … 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 radius,describe the arc, 6c/ and with the same radius, on the line, d e, 20 AMERICAN HOUSE-CARPENTER. and from the point, c?, describe the wcc,fg; take the distance, b c, and upon g,…
Carpentry · Architecture
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