1. Measures angles between two points on internal or external corners, featuring a retractable edge guide for layout work 2. This decorative woodworking accessory is the most practical tool in your toolbox for installing door and window trim. Its unique measuring and marking mechanism eliminates the hassle of using a tape measure when determining trim lengths 3. Includes an angle divider for easy miter saw setup, plus a groove for vertically securing clamps during framing construction 4. Built-in clamp plate design works with any clamping system; 45° tilting head marks miter cuts. 5. Exclusive adjustable gap setting ranges from 1/8“ to 1/2” in 1/8" increments. Flexible operation requires no assistance. Note: The product may have a slight tolerance of 1-3 mm/1-3 g in size/weight, and the image color may differ from the actual item due to lighting.