INCRA 160mm Metric Protractor brings the simplicity and precision of metric measurements to your angle marking needs. This large 160mm stainless steel protractor not only measures angles but also marks them automatically and ly. Simply align the center, place a 0.5mm pencil in the precision slots, and make an accurate mark every time. It features extra-long guide slots at every 0.5, 1, 5, 22.5, 30, and 45 degree interval for versatile use. The built-in 160mm centering rule along the lower edge includes marking holes at every 1mm graduation, ensuring precise measurements. Included is a detachable fence for easy and accurate alignment to edges, along with a 0.5mm mechanical pencil to get you started. Made in the USA.