Scale marking: This accurate square ruler features clear, wear and faderesistant scale markings that maintain accuracy over time. Material and durability: Constructed with aluminium alloy, this tool resists corrosion and is designed for longlasting performance on tough job sites. Multifunction design: Combines a triangle ruler, protractor, and line writers in one square ruler for practical versatility across a range of tasks. Applications: Suitable for framing, roofing, construction, and renovation projects. Benefits and performance: Enhances layout accuracy, reduces the need to switch between multiple tools, and provides a durable, siteready solution. Use scenarios: Framing: mark and verify angles and lines for accurate stud placement and layout. Roofing: check angles and slope, then mark cuts directly on materials. Renovation: mark precise trim, panel, or drywall cuts with an integrated ruler for consistent results.