Mechanical exercises, or, The elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing, and turning (1812)
Nicholson, Peter, 1765-1844 · London: J. Taylor · leaf 339
Zig.a … ZiiidmTalJis7xta3/aifhtai/iU.i\JJqi-7t!t-Stif/iM^7irt-n. BRICKLAYING. 249 PLATE VI. Contains Groins of various kinds. Fig. 1 a semi-cylindric equi-angular groin, thecentre of one vault being generally boardedin without any regard to the other, and the otherboarded in afterwards. Fig. 2 a…
