The Sheet-metal Worker's Instructor: Practical Rules for Describing the Various Patterns Required by Zinc, Sheet-iron, Copper, and Tin-plate WorkersTechnical Press, 1946 - 224 sider |
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alloys base bending body bottom centre circle complete cone construct contained copper corresponding cut the line cylinder describe diagonal diameter dimensions divide division draw a line draw lines draw the line drawn edge elevation ellipse envelope equal extend face figure four frustum give given half hammer height horizontal inches iron Join joint lead letters mark measure meet metal method obtained parallel pattern perpendicular perpendicular line piece pipe plane plate points points of intersection portion practical PROBLEM produce projection pyramid radius raising represent right angles roll round Rule semicircle sheets shown shows sides slant height smaller solder solid square stake straight line strike the curve struck surface take the distance Take the length tapering thick thin transfer triangle various vertical height vessel width zinc