Feature: 1. High Quality and Reusable: Made of impact and chemical resistant wood, this stair tool is extremely durable and reusable. 2. Scale Measuring Angle: Stairs measuring ruler will give you an angle from 0 degree to 270 degree and an adjustable length to cut stairwell steps. 3. Lock Firmly and Stable: Use the 4x knob to lock it firmly in place, this is very stable and won't drift during measurement 4. Precise Measuring: Stair tread template tool is essential for precise cutting and measuring. Scale measuring length is 30 to 49 inches. 5. Good Workmanship: Exquisite workmanship, beautiful appearance design, portable size, providing you great using experience. Specification: Item Type: Stairs Measuring Ruler Material: Log Color: As Pictures Shown Weight: Approx. 630g / 22.2oz Scale Measuring Angle Range: 0°-270° Scale Measuring Length Range: 30-49 Inches. Package List: 4 x Measuring Ruler4 x Screw1 x Nut4 x Accessories