Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 39
should be removed, andsome other portion of it found to continue the curve from the lastpoint. This process is shown in Fig. 134, p. 77. French curves aremade in pearwood, in a great variety of shapes. Figs. 49, 50, and51 show useful patterns, and a few of these in varying sizes willbe sufficient… … Fig. 51.—French Curve. drawn by passing the drawing pen round them. Small templatescan be shaped with a penknife, the curved portions beingsmoothed with a file and glasspaper. In addition to the curves enumerated above, the draughtsmanshould provide himself with a few thin pieces of pearwood…
Mechanical drawing
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