Essentials of drafting; a text and problem book for apprentice, trade and evening technical schools (1918)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 21
The compasses should beoperated with one hand (the right hand). The needle pointshould be placed in the center, and the marking point revolvedclockwise. Once around is enough, starting at the point in-dicated in Fig. 11. The bow instruments are used for small circles and divisions.The method of… … Fig. le. Fu/I Size I Fig. 13. the right hand. When dividing a line, the points should berevolved in alternate directions, as indicated in Fig. 12. Todivide a line into three parts, first set the dividers at a distanceestimated to be about one third. Try it, and if too short, increasethe distance…
Mechanical drawing
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