A practical workshop companion for tin, sheet iron and copper plate workers : containing rules for describing various kinds of patterns used by tin, sheet iron and copper plate workers : practical geometry, mensuration of surfaces and solids, tables of the weights of metals, lead pipe, etc., tables of areas and circumferences of circles : japans, varnishes, lackers, cements, compositions, etc., etc., etc. (1876)
Blinn, Leroy J · Philadelphia : Henry Carey Baird & Co. · leaf 60
on each side of BD the same number of equal dis-tances, as in the semicircle BCD, and from the points draw linesparallel to BD, as 11, 22, 33, &c. Make BD equal to AB, andEA and CF equal to ED ; also, each of the parallel lines, bearingthe same figures as 11, 22, 33, &c. Make GI and HJ… … Pig. 50.
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
