The sheet-metal worker's guide : a practical handbook for tinsmiths, coppersmiths, zincworkers, etc., comprising numerous geometrical diagrams and working patterns, with descriptive text (1888)
Crane, W. J. E. (W. J. Eden) · London : Lockwood and Son · leaf 82
70 THE SHEET-METAL WORKER's GUIDE. circumference of the base a b draw the lines i H. … Fig. 63. and J K, cutting the centre e. Edges to be allowed. Describe the right angle abe (Fig. 63), make bd the altitude, draw the line cd at right angles to b e, make a b equal one half the diameter of the To describe a pattern for an envelope for the frustrum of a cone*
Sheet-metal work
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