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74
SHEET METAL DRAFTING
right angles to the line of stretchout. The intersections of the developed miter line should be lettered as shown in Fig. 107. An extension line is dropped from point E of the developed miter line, until it meets line E of the stretchout. In like manner, intersections for all other points in the developed miter line are located. A curve drawn through these points will give the true shape of the opening in the main pipe.
