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 38
h may be found eitherby measurement or calculation); divide the semi-circle AOD intoany number of equal parts, and draw the lines parallel to BD ;divide BE into the same number of equal parts, and draw liueaparallel to AD; mark ordinates on each side of BE ; as 1, 2, 3,and 4 equal to the lines of… … Erect the perpendicular line GE ; draw the line AB at ni^.<itangle to GE ; make EF equal to the Slant height, and draw theline CD parallel to AB ; make AB equal in length to one side ofthe base; make CD equal in length to one side of the top orsmallest end, draw the lines AG and BG, cutting the…
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
