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 (1866)
Armengaud, Charles A., 1813-1893, Armengaud, Charles, 1813-1893, [from old catalog] joint author, Amouroux, Jules, [from old catalog] joint author, Johnson, William, 1823-1864. [from old catalog] · Philadelphia, H. C. Baird · leaf 197
eir extremities. One of the log piecesis formed with a steel point at one end, and a pen at the other;whilst the other leg has a steel point at one end, and a Ic.ui pencilat the other. The legs aro jointed to the siianks by tiieir longi-tudinal centres, and can be turned between tlie forks, so as… … Pig. 12. Fig. 12 is the repre-sentation of a some-what smaller pair ofcompasses, in wliichthe 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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