This is a lens board and part of a back for a Folmer Graflex Copy Camera. Made of some nice wood, like mahogany, could be used for camera projects. The lens board measures 11 x 11 inches and has a 4x4 inch adapter on front, which could be removed and about a 3.25 inch hole. The back frame measures 12.75 inches square, with an inset of 11and15/16ths. It has pins on 2 sides.