The technic of mechanical drafting a practical guide to neat, correct, and legible drawing (1904)
Reinhardt, Chas. William (Charles William), b. 1858 · New York, The Engineering News Pub. Co. · leaf 25
so that an ad-jacent side forms the angledesired for the hatchings,and the pins are driven into Fig- 38. the edge so that the corners of the triangle can strike against them,the distance between the pins being equal to the side of the triangleplus the desired distance between the hatchings. To use… … 22 hand edge ; the triangle is still held firm, and the straight edge isslid to the left until stopped by the right-hand pin; the straight-edge is then held firm, and the triangle slid up to the left-hand pin;a second line is then drawn, and this process is repeated until thesection surface is…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
