Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 58
rgest of them being 3 in. radius. This completesthe pencilling ; but, to ensure neat work in inking, see that theterminations of all the lines and curves are clearly indicated, DRAWING OIRCnLAB LINIES. S5 either by a thin pencil line drawn across their ends, or by beingdrawn very neatly and… … Fig. 88.—Concentric Arcs. in a straight line, that is, measuring the chord of the arc insteadof the arc itself. These might be called parallel curves, and,although this is an expressive term and not likely to be mis-understood, they are not a correct example of parallelism. , Now try three more…
Mechanical drawing
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