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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. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    The French scale measures the outer diameter of the catheter, not the size of the internal drainage channel (inner diameter). For instance, a two-way catheter of 20 Fr and a three-way catheter of 20 Fr have the same outer diameter, but the three-way catheter has an additional channel for irrigation, reducing the size of its drainage channel.

  4. Template:Convert/list of units/length - Wikipedia

    en.wikipedia.org/wiki/Template:Convert/list_of...

    1.0 h (4 in; 10 cm) inch: in in Use of ′ and ″ symbols violates MOSNUM so is not provided. 1.0 in (25 mm) in cm; in mm; Maritime units: nautical mile: nmi nmi the international standard nautical mile 1.0 nmi (1.9 km; 1.2 mi) nautical mile: oldUKnmi (admiralty nmi) nmi 6080 ft the pre-1970 British nautical mile: 1.0 nmi (1.9 km; 1.2 mi ...

  5. 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)

  6. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T

  7. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.

  8. Indian Head gold pieces - Wikipedia

    en.wikipedia.org/wiki/Indian_Head_gold_pieces

    On the double eagle, "E Pluribus Unum" is placed on the edge, an impractical setting on pieces about the size of the nickel and dime. [8] Philadelphia Mint Superintendent John Landis forwarded Barber's letter to Leach with his own note, stating, "I know it will be difficult to put the inscription 'E Pluribus Unum' on the periphery of a quarter ...

  9. 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.