The Ruler Edged Charles Leonard Open Centre 6" Protractor 12/DZ is a convenient addition to the school supplies of young mathematicians, especially those taking classes that emphasise geometry and angles. Its open centre makes it easier to place and use. This plastic protractor has black-scored graduations for clear viewing of distance increments in both metric (centimetre) and standard (inch) systems. A transparent frame makes for more accurate placing and measurement, especially over papers. The Ruler Edged Charles Leonard Open Centre 6" Protractor 12/DZ has a simple and effective design that makes it helpful for a variety of math problems.
Charles Leonard Open Centre Protractor, Plastic, 6" Ruler Edge, Clear, 12/DZ: