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  2. C.a.R. - Wikipedia

    en.wikipedia.org/wiki/C.a.R.

    C.a.R.– Compass and Ruler (also known as Z.u.L., which stands for the German "Zirkel und Lineal") — is a free and open source interactive geometry app that can do geometrical constructions in Euclidean and non-Euclidean geometry. The software is Java based. The author is René Grothmann of the Catholic University of Eichstätt-Ingolstadt.

  3. Ruler - Wikipedia

    en.wikipedia.org/wiki/Ruler

    A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]

  4. Rolling ruler - Wikipedia

    en.wikipedia.org/wiki/Rolling_ruler

    A rolling ruler is a ruler that contains a cylinder much like a rolling pin inside, thereby enabling it to "roll" along a sheet of paper or other surface where it is being used. A rolling ruler can draw straight, parallel lines, and also has other instruments included, enabling it to do the jobs of a protractor and compass .

  5. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    Each ruler's scale has graduations labeled with precomputed outputs of various mathematical functions, acting as a lookup table that maps from position on the ruler as each function's input. Calculations that can be reduced to simple addition or subtraction using those precomputed functions can be solved by aligning the two rulers and reading ...

  6. Calipers - Wikipedia

    en.wikipedia.org/wiki/Calipers

    The ship's find dates to the 6th century BC. The wooden piece already featured a fixed and a movable jaw. [4] [5] Although rare finds, calipers remained in use by the Greeks and Romans. [5] [6] A bronze caliper, dating from 9 AD, was used for minute measurements during the Chinese Xin dynasty.

  7. Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

  8. College Football Playoff rankings: Oregon, Ohio State and ...

    www.aol.com/sports/oregon-ohio-state-georgia...

    There weren’t any surprises in the first set of rankings for the 12-team College Football Playoff. Oregon was the No. 1 team ahead of Ohio State, Georgia and Miami.

  9. Macy’s is in deep trouble. It could be sitting on a gold mine

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    Macy’s and other department stores, such as Kohl’s, Nordstrom and JCPenney, have lost out in recent years to online retailers like Amazon; big box retailers that sell groceries and a range of ...

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