Haswell's engineers' and mechanics' pocket-book .. (1844)
Haswell, Chas. H. (Charles Haynes), 1809-1907 · New York, Harper & brothers · leaf 60
Rule 2, Jig. 18.—Divide the line A B also into three equal parts, e f; tiom the GEOMETRY. 53 length off B, describe the arcs A p-VnH R * „„^1 ^i ^°- ^ P° « /, with the^ .Jnd iUni it w,n complete^fotS^r Goihlia^r ^ ^ ^ ^^^ *^ arcs . ^ ^ndfg, and it will complete another Gothic^ch^ ^ ° P >« E2 54…
Engineering · Mechanical engineering
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