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 56
e CD equal to CD, and DH equal to DE ;make HF equal to the curved line EF ; divide HF into the samenumber of equal distances, as in the curved line EF; from thepoints draw lines parallel to GE ; make AGAE and BIBJ equal toGA ; also, each of the parallel lines bearing the same figures as1, 2, 8, 4,… … Pig. 46
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
