DEWALT has a well-earned reputation for designing and manufacturing many of the world's most reliable and best-performing professional-grade power tools. And every product is forged with DEWALT's unwavering commitment to producing tools and accessories that can withstand harsh jobsite conditions and meet the unyielding day-to-day demands of professional contractors. And now, DEWALT has applied that same no-nonsense, Guaranteed tough philosophy to its new line of heavy-duty hand tools. Designed to deliver the same standard of excellence as its power tools, DEWALT hand tools were conceived on the jobsite and built to exceed the expectations of professional homebuilders, remodeling contractors, plumbers, electricians, industrial maintenance mechanics, drywall hangers, demolition crews and all other construction trades. This scale has a Common/Jack and Hip/Valley rafter scales defined by inch rise per foot of run.