Math Set contains 10 items conveniently packed in a metal box for storage. It includes 6" ruler (Imperial and metric), 4" 45-degree triangle, 4" 60-degree triangle, 4" 180-degree protractor, lettering guide, 4" compass, 4" dividers, wooden pencil, sharpener and an eraser. Set includes all a student or hobbyist needs to perform geometry equations and craft projects including creating mandalas. Lettering guide helps create easy subject headings.