Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 133
perposed, the secondary tints of purple, orange, and greenwill be found to have been made by the combination. Eachsection of colour in the circle will be complementary tothe one opposite it—that is, it will be in extreme contrast,I 130 FRAG TIG AL DRAUGHTSMENS WORK. and it is a physiological fact… … Fig. 197.—Colours of the Spectrum, Oi 1 in. each and numbered as shown in Fig. 197, and equaltints of crimson lake, indigo, Prussian blue, and gambogebe prepared, the various rainbow colours named upon thecolumns may approximately be produced as follows : Tintthe columns numbered 1, 6, and 7 with…
Mechanical drawing
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