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  2. United States Mint coin sizes - Wikipedia

    en.wikipedia.org/wiki/United_States_Mint_coin_sizes

    Half Dime 15.5 mm 1.24 g 1794–1873 Dollar 15 mm 1.67 gr 1849–1889 $5 American Gold Eagle 16.5 mm 3.11 g 1986–present $10 American Platinum Eagle 16.5 mm 3.11 g 1997–present Three Cent 17.9 mm 1.94 g 1865-1889 Dime (Clad) 17.91 mm 2.268 g 1965–present Dime 17.9 mm 2.5 g 1796–1964 $2.50 Gold Quarter Eagle 18 mm 4.2 g 1796–1929 Small ...

  3. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    To help compare different orders of magnitude, this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm). 1.0 mm – 1/1,000 of a meter 1.0 mm – 0.03937 inches or 5/127 (exactly)

  4. Dime (Canadian coin) - Wikipedia

    en.wikipedia.org/wiki/Dime_(Canadian_coin)

    In Canada, a dime is a coin worth ten cents. It has been the physically smallest Canadian coin since 1922; it is smaller even than the country's penny , despite its higher face value. According to the Royal Canadian Mint , the official national term of the coin is the 10-cent piece , but in practice, the term dime predominates in English ...

  5. Indian Head gold pieces - Wikipedia

    en.wikipedia.org/wiki/Indian_Head_gold_pieces

    Examples of the Indian Head gold pieces grouped with modern coins for size comparison purposes. As a result of the White House lunch meeting, Leach agreed to abandon the idea that the double eagle design be used for the small gold pieces, and to cooperate with Bigelow and Pratt in the making of the new coins.

  6. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.

  7. Half cent (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Half_cent_(United_States_coin)

    It was slightly smaller than a modern U.S. quarter with diameters 22 mm (1793), [1] 23.5 mm (1794–1836), [2] and 23 mm (1840–1857). [3] They were all produced at the Philadelphia Mint. The Coinage Act of February 21, 1857 discontinued the half-cent and the similar large cent , and authorized the small cent ( Flying Eagle cent ).

  8. Nickel (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Nickel_(United_States_coin)

    Its diameter is 0.835 inches (21.21 mm) and its thickness is 0.077 inches (1.95 mm). The silver half dime , equal to five cents, was issued from 1792 to 1873 before today's cupronickel version. The American Civil War caused economic hardship, driving gold and silver from circulation; in response, in place of low-value coins, the government at ...

  9. Comparison of the imperial and US customary measurement ...

    en.wikipedia.org/wiki/Comparison_of_the_imperial...

    Wine was measured with units based on the wine gallon of 231 cubic inches (3.785 L), while beer was measured with units based on an ale gallon of 282 cubic inches (4.621 L) and grain was measured with the Winchester measure, with a gallon of approximately 268.8 cubic inches (one eighth of a Winchester bushel or 4.405 L). In 1824, these units ...