Everything needed for higher-math classesthis precision instrument set is ideal for serious high-school & college students. Includes a standard / metric ruler, a 180 protractor, a 60 set square, a 45 set square, a safety-point scribe compass, a set of loose-leg wing dividers, a woodcase pencil, a pencil sharpener, a block eraser & a lettering guide. Handy metal storage case features imprinted conversion tables & geometric theorems. Color(s): Clear / Blue; Material(s): Plastic; Ruler Type: Standard / Metric; Standard Scale: 1/16".