This geometry set contains a 180° Protractor, 45° and 60° triangles, and a 12" ruler. It is packaged in a plastic pouch with two divided pockets. The rulers and triangles all have inch and centimeter calibrations for all your measuring needs, and have a clear construction that allows you to see the material you are working with.Details:Clear12 sets (4 pieces per set)Inch and centimeter calibrationsAcrylicSet Contents:180° protractor45° triangles 60° triangles12" (30.48 cm) ruler