You thought the only thing missing from your layout square was lasers — well, the Stanley FatMax Laser Level square may not have all the functionality of a layout square, but it does feature two lasers attached to an aluminum 90-45-45° square with level and plumb vials to boot.
Stanley gives the square a precision-machined 90° edge and marks the hypotenuse with 5-degree angle markings typically found on a layout square. You can mount the square on vertical surfaces with a re-usable adhesive putty.
Simply push the button to activate the lasers. Powered by three AA batteries, two 635nm laser diodes project a line up to 100′ depending on the lighting conditions. Stanley calibrates the lasers to be accurate to 1/4″ at 60′. And just in case it’s raining like you need an ark, the electronics enclosure is waterproof to the IP55 standard.
Stanley’s Laser Lever Square includes a laser target, carrying case, batteries, user manual, and two adhesive putty mounts. Pricing varies between $110 and $140.