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protractor |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.09 sec. |
protractorInstrument for constructing and measuring plane angles. The simplest protractor is a semicircular disk marked in degrees from 0° to 180°. A more complex protractor, for plotting position on navigation charts, is called a three-arm protractor, or station pointer, and consists of a circular scale connected to three arms. The centre arm is fixed, while the outer two can be rotated to any desired angle relative to the centre one. A related instrument is the course protractor, which allows navigators to measure the angular distance between north and the course plotted on a navigation chart. protractor 1. an instrument for measuring or drawing angles on paper, usually a flat semicircular transparent plastic sheet graduated in degrees 2. a surgical instrument for removing a bullet from the body 3. Anatomy a former term for extensor |
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| Joglar works with ordinary office supplies--paper clips, rulers, protractors, pencils, erasers, colored paper, note cards, envelopes--that seem in his hands to magically turn into something else, something radically different. Even basic equipment such as compasses and protractors is often lacking. The professionally produced seven-minute video interweaves clips of students using protractors in class, playing violins and acting on stage, as well as playing on athletic teams. |
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