Figs 1 and 2 show the plan and elevation. The bevel for the bottom ends of the rafters will be the same as their rake, as shown atE (Fig. 2). The bevel to apply to the sides of the rafters at the top is obtained by drawing from K (Fig. 1), KL parallel to B' N (Fig. 2), and then by drawing the vertical line LM, giving the bevel as at F. At Fig. 3 is shown the bevel applied for the backing of the hips; this is obtained by fixing on any point P in K B and drawing an arc tangent to K L and meeting K B in R; from P draw a line perpendicular to KB, meeting KO as shown, and join OR, which will give the augle G required. To get the true shape of one side, bisect A S in C and draw the straight line BCD, then with the compasses set to radius A'B' set off AD. The joining of AD and DS gives the shape required. From this development the bevel fur the top of the hips is obtained by the angle CDs as shown at II.

Levels for Hips to Semi-octagonal Lantern Light.