Check the listing for details. Westcott 360-Degree Compass Protractor, Crystal Clear Transparent Dial, Calibrat. Color: Clear, Condition: New. Listed at 3.70 USD. Durable Construction: The surface of this math protractor / compass is laminated for added durability; This protractor / compass drawing tool also features a solid center. - Easy To Read: An ideal drawing and drafting tool, this drawing compass / protractor is constructed of clear plastic and allows for viewing through to the page while you work.