A safe, plastic compass (no sharp points, made with SAFE-T plastic) that lays flat on your paper. Held in place with one finger while you insert a pen or other writing implement in a drawing guide hole. It's called a Bullseye compass because of the Direct View compass point which allows you to exactly place the center of the circle at any point. A sliding radius indicator lets you select radius in metric or standard units. Holes in the indicator that line up with the arrows provide extremely accurate construction. The compass also has a built-in protractor for measuring and constructing angles and the radius arm doubles as a ruler with both standard and metric markings.