Two matching parts made of a wood piece that has a black metal bracket on one end with a hook protruding out. The piece of wood is number in inches one to twelve, repeating four times wtih nine extra inches at the end. Below the stamped numbers is a ridge with small sharp hooks. About halfway down the wood is a slit that goes through to the other side. Attached to the back of the board is another piece of wood that is shorter and attached by a hinge so it can be pulled out forming a leg.
