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 23
the Fio. 33. circle into any number of given parts, as 1, 2,3, .^ &c., and setting off half \^ that number of jDarts on •^^ each side of b ; drawxo)L .((ID lines from the inter-sections of the circleB C 1,2,3, &c., 7,8,9, &c., ))arallel to AC; set off one division of the circle outwards…
