This section is from the book "Cassell's Cyclopaedia Of Mechanics", by Paul N. Hasluck. Also available from Amazon: Cassell's Cyclopaedia Of Mechanics.
Walnut, oak, or canary wood is suitable for constructing the photograph frame here illustrated. It should be about Jin. or 1 in. thick, and 10 3/4 in. long by 9 in. wide. The outside margin is fin.; the size of the inner oval, from A to B, 4 3/8 in.; from C to D of in.; and the outer oval is fin. larger all round. The oval could be made larger or smaller, to suit the photo; the dotted lines show the method of construction. The design is simple and plain, and easy to mark on the wood. If the lines AB and C D are continued to the outer edges of the wood, they will divide it into four equal parts, and if one part of the design is sketched and taken off on tracing paper, it can be applied to each corner. The ground can be punched or cleaned.
Design for a Carved Photo Frame.