Precise Adjustable Angle Mechanism: This L-shaped carpenter square ruler features a snap-fit, adjustable angle design. With 15° incremental steps and a 330° rotating range, the square offers a clear tactile feel and locks into position accurately for reliable angle setting and measurement. Multi-Angle Marking and Measurement: This multifunctional framing square makes marking at regular angles effortless. It integrates the processes of angle setting, precise measurement, and direct marking into one seamless operation, handling multiple layout tasks efficiently. Built-in Scribing Pin for Easy Marking: The carpenter square ruler includes a built-in, convenient scribing pin at the base of the straightedge. This integrated marking tool allows for easy and precise line marking directly from the ruler, enhancing operation safety and simplifying storage. Secure Anti-Drop Design with Backrest Screw: Equipped with a backrest auxiliary screw, the right angle square can be securely fastened to the workpiece to prevent slipping or dropping. This support structure holds the square firmly in place on your working surface, freeing both hands for other tasks. Clear, Durable Dual-Sided Scales: The aluminum alloy framing square features clear and accurate double-sided scales. The 2mm thick ruler body is proof to deformation, and the engraved scales are wear-proof for long-lasting clarity and in all your woodworking and construction projects., Manufacturer: Jelquix