. Cyclopedia of architecture, carpentry, and building : a general reference work .... Fig. 286. Fig. 287, for which proceed as follows: Draw any horizontal line, asa 1; and from a erect the perpendicular a a equal to the height thepanel is to have. Now^ take the lengths of the various lines in Fig. 286from a to 1, a to 2, a to 3, etc., to a to 9, and place them on the line a 1 inFig. 287, as shown by similar numbers. Then using as radii the various 297 212 SHEET METAL WORK lengths a 1, a 2, a 3, etc., to a 9, and with any point, as a! in as center, describe the various arcs shown from
. Cyclopedia of architecture, carpentry, and building : a general reference work .... Fig. 286. Fig. 287, for which proceed as follows: Draw any horizontal line, asa 1; and from a erect the perpendicular a a equal to the height thepanel is to have. Now^ take the lengths of the various lines in Fig. 286from a to 1, a to 2, a to 3, etc., to a to 9, and place them on the line a 1 inFig. 287, as shown by similar numbers. Then using as radii the various 297 212 SHEET METAL WORK lengths a 1, a 2, a 3, etc., to a 9, and with any point, as a! in as center, describe the various arcs shown from 1 to 9. From anypoint on tlie arc 1 draw a line to a. Set the dividers equal to the spaces contained in thecurve 1 5 in Fig. 286; and,starting from 1 in Fig. 288step from one arc to an-other having similar num-bers, as shown from 1 to similar manner, take thedistance from 5 to 6 andthe spaces in the curve 0 9. Fig. 287.
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