General description The FLITI Round Head Protractor is a 10-inch carpentry edge ruler designed to simplify woodworking tasks by providing precise measurements on both sides of the workpiece. This tool is essential for achieving accurate angle placements, especially in larger panel projects where even a small error can lead to significant discrepancies. Technical specifications Length: 10 inches Material: Stainless steel Type: Double arm angle measuring tool Usage Slide the head to the desired angle for precise measurements. Utilize the precision-machined indexing holes for accurate angle placement. Lock the pin into place for confidence in your measurements.