Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 68
Fig. 112.-Quirked Ovolo. … Fig. 113.—Scotia. two curves meet. The dotted lines show that tangent curvesalways meet upon the line joining their centres. The heading to this drawing should be in block letters y^in.deep, and the descriptions in block letters | in. deep, all upright. 66 PRACTICAL DRAUGHTSMENS WORK. It is better…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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