It can be used with any pencil, pen, or marker, and its setting won't ever slip. The point retracts for safe storage. Protractor Imported from England, this protractor is made of clear plastic with permanently bonded calibrations and will never bend or break. Beveled edges and angle rules make accurate measurements easy on both small and large diagrams. It is made of clear plastic to assist students in aligning segments.
Holes allow convenient storage in loose-leaf notebooks.
Straightedge Made of clear plastic, this 6-inch straightedge is the perfect tool for construction activities. Unlike a ruler, this straightedge has no markings, forcing students to use their compass for measurement.