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 82
describethe arcs HI and CD; set off CAD equal in length to the circum-ference of the large end AB ; draw the lines CB and DB ; set offon each side of AB the same number of equal distances as in thesemicircle AB; from the points draw lines cutting the centre atB; make AE equal to BL ; make CF and DG… … /piiy a T b s tt astB 74 rR.VCriCAL RULES
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
