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 200
Fig. 30. Jin nnfvon outline. In the instrument represented in figs. 29 and30, Iju! parts which traverse the guide-grooves in the plate, (), con-sist of small steel wheels, o,;;, can-icd in the forked ends of the * See page 17. … Fig. 32. tion with regard to the grooves, whatever be the position of the bar,E, and pen, s. In adjusting the instrument, it is simply necessaryto set the pen and centre legs, so that the distance of the twolatter from the former shall coiTCspond respectively with thesemi-transverse and…
Mechanical drawing
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