Modern, ergonomic compass perfect for all ages! Features a twist-lock that secures the legs in place for accurate circle size and guaranteed precision. Innovative Safety Tip automatically retracts when you close the compass legs to avoid potential injuries in a bag or case. Integrated distance measuring arm is graduated in both inch and metric. Set includes 6" shatter-resistant protractor made with translucent material and beveled edges for ease of use. Each 2-piece set includes a Plastic Locking Compass and Shatter-resistant Protractor in Blue, Green, Red or Orange (no color choice).