E. PRESTON & SONS #553 Steel Zig Zag Rule. (43082)

Model number #553. It’s not shown in the Preston 1909 catalogue? It’s a two feet four fold, button joint in inches and 1/16 increments to one side and centimetres and millimetres to other side. A clean rule that opens and closes smoothly.

Price is inclusive of postage to mainland U.K.