If a frame is to be made i inch larger all around, 1 inch is really added to the diameter, \ inch on each end of the diameter or each side of ... So pi, or 3.1+, X 1 inch = the amount added to the circumference = 3.1+. ... The headsize is a circle within a circle and the rule is inverted size is to be made 1 inch larger 8 MILLINERY X.
|Title||:||Millinery Hat Making Patterns Manual 1925 Reprint|