fig. 278.   A Butt Miter Against a Plain Surface Oblique in Plan

Fig. 278. - A Butt Miter Against a Plain Surface Oblique in Plan.

Let A B L K in Fig. 273 be the plan of the cornice which is required to miter against a vertical surface standing at any angle with the lines of the cornice, the angle being shown by A B. Draw the profile C D in position corresponding to the lines of the cornice, all as indicated. Space the profile in the usual manner, and through the points draw lines parallel to the direction of the cornice, cutting the miter line A B. On any convenient line at right angles to the lines of the cornice lay off the stretchout E F of the profile C D, through the points in which draw measuring lines in the usual manner. Placing the T-square at right angles to the cornice, or, what is the same, parallel to the stretchout line E F, bring it successively against the points in A B and cut the corresponding measuring lines. A line traced through the points of intersection thus obtained, shown by H G, will be the pattern required.