- Made of high-grade aluminum alloy with a matte finish to prevent glare and provide durable, comfortable use in various lighting conditions. - Dual metric and degree scales tailored for common rafters and hip-valley rafters, enabling quick, accurate layout readings in both dimensions and angles. - Traditional one-number method for rafter layout simplifies measurements with a single reference value, reducing calculation steps on site. - 0.5 cm speed notches to facilitate precise scribing lines and quick transfer to lumber. - Use scenario: Ideal for framing a residential roof with common rafters, allowing fast, accurate layout with clear metric and angle references. - Use scenario: Effective for complex roof geometry involving hip and valley rafters, helping transfer angles and lengths accurately from plans to the lumber. - Use scenario: On-site scribing and line transfer, where the 0.5 cm speed notches provide guides for clean, repeatable markings during cutting and fitting.