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 56
44 THE SHEET-METAL WORKER's GUIDE. and c by a right line, and tliis line will be per- pendicular to A B and at right angles thereto. To draw a line parallel to a given line, a b, and at a given distance, equivalent to c d (Fig. 36) : — From it, with the centres a and b … Fig. 36. respectively, and the distance c d as a radius, describe the arcs 1 and 2. Draw the line 3, 4, resting upon these arcs at their highest point, and this line will be parallel to A b and at the required distance from it. To find the centre of any given circle or arc of any circle : — Draw…
Sheet-metal work
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