The naval architect's and shipbuilder's pocket-book of formulae, rules, and tables and marine engineer's and surveyor's handy book of reference (1884)
Mackrow, Clement · London, C. Lockwood and co. · leaf 20
beam required. 19. To descHbe the lyroper form of aflat plate by which to construct any givenfmstum of a cone. (Fig. 19.) Let abcd represent the requiredfrustum of a cone; continue the linesAC and bd till they meet in E; from Eas a centre, with ed as radius, describethe arc dh, and from the same… … Fig. 19.