The practical draughtsman's book of industrial design and machinist's and engineer's drawing companion : forming a complete course of mechanical, engineering, and architectural drawing (1863)
Armengaud, aîné (Jacques-Eugène), 1810-1891, Armengaud, Charles A., 1813-1893, Amouroux, Jules, Johnson, William, 1823-1864 · Philadelphia : H.C. Baird · leaf 197
eir extremities. One of the leg piecesis formed with a steel point at one end, ami a pen at the other;whilst the other leg has a stool point at one end, and a had pencilat the other. Tho legs aro jointed to the shanks by their longi-tudinal centres, and can bo turned between tho forks, so as… … Fig. 12. Fig. 12 is the repre-sentation of a some-what smaller pair ofcompasses, in whichthe pen is formed inone piece with a steelpoint, which may beinverted, or a pencil-holder introduced in-stead. This is a con-venient instrument forsmall work. Another form ofcompass is representedin figs. 13,…
Mechanical drawing
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