Key Benefits All in one tool: this triangle ruler functions as a set square, protractor, line scriber, and saw guide, streamlining your measuring and marking work. Durable and precise: made from aluminum alloy with an electrophoretic paint finish, it offers hardness and toughness, and a scale that is clear and wear resistant. Clear dual scale: doublesided with metric on one side and inch markings on the other, featuring permanent graduations for easy, long lasting readability. Portable and practical: compact design for easy transport to job sites and workshops. Specifications and features Color options: Black, Silver, Blue, Red Material: Aluminum alloy Readings: Metric; doublesided with metric on one side and inch markings on the other Scale and graduations: Permanent, clear, and wearresistant Data: Doublesided metric and inch marking lines Functions: Set square, protractor, line scriber, saw guide Durability: Electrophoretic paint process; hardness; strong toughness Portability: Compact design for easy carrying Applications: Suitable for carpenter, construction professional, roofer, DIY and more Use: Determining and marking angles and making square cuts Use scenarios Framing and trim work: determine angles and mark square cuts on boards and framing members with accuracy. Roofing and exterior projects: measure and mark angles for roofing components and related cuts. DIY and workshop tasks: scribe lines and guide saws for straight, precise cuts on various materials.