Process: Aligns with specific ruler indicators on framing squares; the contoured openings improve scale marks visibility when fully inserted, permitting smooth movement across workpieces for repeated marking operations Important for productive layout tasks Versatile Application: Suitable for stair stringer configurations, rafter setups, circular instrument guides, framing square additions, repeated corner evidence with, and assisting devices for forming operations Great for carpentry and building applications Construction: Built with anodized aluminum featuring black scale stainless steel thumb screws for increased strength and prolonged use in various work settings Works well with framing square accessories and measuring instruments Firm Control: Includes large knurled thumb screws for secure handling and strong attachment to rafters or workpieces, allowing stable and correct modifications even when wearing gloves Consistent Results: Elevated design extends past curved workpiece edges to reduce errors, loyal layouts for professional levels results in measurement and marking tasks