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  2. Barleycorn (unit) - Wikipedia

    en.wikipedia.org/wiki/Barleycorn_(unit)

    As modern studies show, the actual length of a kernel of barley varies from as short as 0.16–0.28 in (4–7 mm) to as long as 0.47–0.59 in (12–15 mm) depending on the cultivar. [ 5 ] [ 6 ] Older sources claimed the average length of a grain of barley was 0.345 in (8.8 mm), while that of a grain of " big " was 0.3245 in (8.24 mm).

  3. Orders of magnitude (length) - Wikipedia

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

    3.690 Mm – length of the Volga river, longest in Europe; 4.000 Mm – length of the Kalahari Desert; 4.350 Mm – length of the Yellow River; 4.600 Mmwidth of the Mediterranean Sea; 4.800 Mm – length of the Sahara; 4.800 Mm – widest width of Atlantic Ocean (U.S.-Northern Africa) 5.100 Mm – distance from Dublin to New York as the ...

  4. Yard - Wikipedia

    en.wikipedia.org/wiki/Yard

    The yard (symbol: yd) [3] [4] is an English unit of length in both the British imperial and US customary systems of measurement equalling 3 feet or 36 inches. Since 1959 it has been by international agreement standardized as exactly 0.9144 meter. A distance of 1,760 yards is equal to 1 mile. The US survey yard is very slightly longer.

  5. Square inch - Wikipedia

    en.wikipedia.org/wiki/Square_inch

    1 square inch (assuming an international inch) is equal to: (the overbars indicate repeating decimals) 0.006 9 4 square feet (1 square foot is equal to 144 square inches) 0.000 7 71 604 9382 square yards (1 square yard is equal to 1,296 square inches) 6.4516 square centimetres (1 square centimetre is equal to 0.155 000 310... square inches)

  6. Foot (unit) - Wikipedia

    en.wikipedia.org/wiki/Foot_(unit)

    Under the Harappan linear measures, Indus cities during the Bronze Age used a foot of 13.2 inches (335 mm) and a cubit of 20.8 inches (528 mm). [11] The Egyptian equivalent of the foot—a measure of four palms or 16 digits—was known as the djeser and has been reconstructed as about 30 cm (11.8 in).

  7. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement.It is equal to ⁠ 1 / 36 ⁠ yard or ⁠ 1 / 12 ⁠ of a foot.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  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.