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2. Goniometer - Wikipedia

   en.wikipedia.org/wiki/Goniometer

   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.

3. Speed square - Wikipedia

   en.wikipedia.org/wiki/Speed_square

   The sum of the angles equals 90 degrees (22.5° +67.5°= 90°). It is also obvious from a visual check when using a protractor that where the instruments displays 22.5° is actually 67.5° on the protractor. Many newer slide miters and miter boxes display both angles. Some of the new calculators have a 0° and a 90° references.

4. Sliding T bevel - Wikipedia

   en.wikipedia.org/wiki/Sliding_T_bevel

   T bevel with protractor and dividers In use. A sliding T bevel, also known as a bevel gauge or false square [1] is an adjustable gauge for setting and transferring angles. . Different from the square, which is fixed and can only set a 90° angle, the sliding T bevel can set any angle and transfer it on anoth

5. Combination square - Wikipedia

   en.wikipedia.org/wiki/Combination_square

   [1] [2] Other names for the tool include adjustable square, combo square, and sliding square. The most common head is the standard head, which is used as a square for marking and testing 90° and 45° angles. [3] The other common types of head are the protractor head, and the centre finder head. [4]

6. List of measuring instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_measuring_instruments

   protractor: angle psychrometer: humidity pycnometer: fluid density pyranometer: solar radiation pyrheliometer: direct solar insolation pyrometer: high temperatures quadrat: percentage cover of a certain species quartz crystal microbalance: thickness of deposited thin films rain gauge: measuring of rain radiometer: radiant flux of ...

7. Square (tool) - Wikipedia

   en.wikipedia.org/wiki/Square_(tool)

   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

8. NYT ‘Connections’ Hints and Answers Today, Tuesday, December 10

   www.aol.com/nyt-connections-hints-answers-today...

   Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...

9. Navigational instrument - Wikipedia

   en.wikipedia.org/wiki/Navigational_instrument

   Navigational instruments are instruments used by nautical navigators and pilots as tools of their trade. The purpose of navigation is to ascertain the present position and to determine the speed, direction, etc. to arrive at the port or point of destination.