The Learning Resources Safe-T Compass LRNLER45761 is designed for safety and ease of use. It eliminates the sharp point found on traditional compasses, making it ideal for classrooms and younger users. This compass can draw circles from 1/4" to 10" in diameter and features two built-in mini rulers with 1/16" markings along one edge and millimeters on the other. Additionally, it includes internal circle templates and is made from shatter-resistant SAFE-T plastic for durability.