Seymour Midwest Rake CAM gauge rake frame; a patented “goof-proof” tool which applies materials at a precise, uniform depth. Apply decorative concrete “toppings” self leveling / high performance floor coating materials, and underlayment’s. CAM depth settings range from 1/32″ to 1-1/2″. Includes an aluminum frame with either a threaded handle adapter or a powder-coated aluminum handle. When one contact point wears down, you simply loosen the wing nut and rotate the CAM to a fresh contact point. We use a “radial” edge design which maintains uniform coating thickness, even at varying handle angles and lengths.