Stanley Hand Tools 46-053 Contractor Grade Quick Square This Adjustable Quick Square Layout Tool has a base length of 10-3/4" and a rule length of 6-3/4" Heavy-duty aluminum construction for durability Black body with yellow graduations provides maximum readability in all light conditions Features Common, Jack and Hip, and Valley scales for various applications Multipurpose, adjustable design can be used as a saw guide, bevel or protractor