TRACER 12" ProSquare Adjustable Measuring Tool (Professional Construction Square with lockable arm and easy to read laser markings)

Amazon

12'' SQUARE TOOL - The TRACER 12'' ProSquare is a quick and simple square tool offering a true 90° angle, with added design benefits and guides making it the ultimate square tool on the market. CONSISTANCY AND REPEATABLITY - Coming equipped with a lockable arm, set to the desired angle and achieve precise, consistent cuts. LASER ETCHED MARKINGS - The TRACER ProSquare includes easy to read Com & Jack Scale markings as well as Hip & Valley Scale markings. All markings are etched with a laser to ensure that the markings don't fade over time. MACHINED FROM SOLID ALUMINIUM - Being made of solid aluminium allows the TRACER ProSquare to be robust while remaining lightweight and precise for the user. INTEGRATED RULER - The TRACER ProSquare comes with an inbuilt 0-170mm ruler along the ‘plumb’ edge for swift and easy measuring.

ManoMano

General description The Tracer APS12 12in Adjustable Pro Square is the ultimate tool for efficiently marking out common, jack, hip, and valley cuts. Designed for ease of use, it features multiple scales to accommodate various roofing pitches. Technical specifications Length: 12 inches Scale markings: Easy to read Angle: True 90 degrees Ruler: 0-260mm on plumb edge with 5mm gradations Pre-marked for 1/3rd of timber width for seat cuts Usage Set scale to match the pitch of the roof for common and jack cuts Use the hip and valley scale for accurate measurements Utilize the lockable arm to set desired angles or zero for quick square use