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A half-circle protractor marked in degrees (180°). A protractor is a measuring instrument, typically made of transparent plastic, for measuring angles. Some protractors are simple half-discs or full circles. More advanced protractors, such as the bevel protractor, have one or two swinging arms, which can be used to help measure the angle.
NASA Technical Reports Server (NTRS) - resource for students, educators, researchers, and the public for access to NASA's current and historical technical literature since it was first released in 1994; Free website Analyzer - is a free online service that collects information about domains and keywords for which they were optimized.
The head usually has one face at 90° to the ruler, and another face at 45° to the ruler. Originally designed for machinists, the tool is also commonly used in woodworking. They can also be purchased with centre finder heads and protractor heads and often incorporate a spirit level. [8] [7] Cylindrical square, or cylinder square
The Carhartt sale includes hundreds of clothing styles and accessories, including options for men, women, and even kids. Many of the items on sale are colors that the brand is discontinuing, so if ...
Billionaire Elon Musk and his government efficiency team have been given access to the U.S. Treasury Department’s payment system, resolving a days-long standoff, the New York Times reported on ...
A new documentary is set to explore the psyche of Luigi Mangione, the 26-year-old who is accused of fatally shooting UnitedHealthcare CEO Brian Thompson.. On Thursday, Investigation Discovery ...
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Breton Plotter. A Breton plotter (French: Rapporteur Breton), also known as a Portland course plotter or Weems protractor named after later manufacturers producing similar devices, is a navigational instrument used for nautical navigation with charts.