Empire's professional 600x400mm framing square has been designed with accuracy, readability & durability in mind. The high visibility laser etched graduations provide 2X accuracy over standard stamped squares & ensure that they never wear, scratch or fade away. The square features large & easy to read high visibility markings with 2mm increments for greater readability. Constructed from a durable lightweight, heavy-gauge aluminium, it will not rust or corrode and resists bending. The unit also includes an arc-scribe feature for precision radius layout & markings & a common conversion table on the back for common applications such as rafter cuts. This tool is made in the USA & carries a Limited Lifetime Warranty.