A tenon saw is a kind of backsaw that is used to cut straight lines in wood. It does not cut materials such as metal. It is a standard item in the carpenter's toolkit. A tenon saw is made out of high-speed steel (HSS) and brass. It is sometimes made out of hard-carbon steel (heat treated steel).
It is used to cut small pieces of wood and most joints. The saw has a fine toothed crosscut for sawing plywood, thin wood and large joints.