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  2. Inch - Wikipedia

    en.wikipedia.org/wiki/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. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to translate similar units in other measurement systems, usually understood as ...

  3. Centimetre - Wikipedia

    en.wikipedia.org/wiki/Centimetre

    A centimetre (International spelling) or centimeter (American spelling), with SI symbol cm, is a unit of length in the International System of Units (SI) equal to one hundredth of a metre, centi being the SI prefix for a factor of ⁠ 1 100 ⁠. [1] Equivalently, there are 100 centimetres in 1 metre. The centimetre was the base unit of length ...

  4. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    Length. For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200⁄3937 m (approximately 0.304 8006 m). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd = 0 ...

  5. Lines per inch - Wikipedia

    en.wikipedia.org/wiki/Lines_per_inch

    Lines per inch (LPI) is a measurement of printing resolution. A line consists of halftones that is built up by physical ink dots made by the printer device to create different tones. Specifically LPI is a measure of how close together the lines in a halftone grid are. The quality of printer device or screen determines how high the LPI will be.

  6. Foot (unit) - Wikipedia

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

    0.3048 m. 30.48 cm. 304.8 mm. The foot (standard symbol: ft) [1][2] is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, ′, is commonly used to represent the foot. [3] In both customary and imperial units, one foot comprises 12 inches, and one yard comprises three feet.

  7. Display size - Wikipedia

    en.wikipedia.org/wiki/Display_size

    Display size. On 2D displays, such as computer monitors and TVs, display size or viewable image size (VIS) refers to the physical size of the area where pictures and videos are displayed. The size of a screen is usually described by the length of its diagonal, which is the distance between opposite corners, typically measured in inches.

  8. Shoe size - Wikipedia

    en.wikipedia.org/wiki/Shoe_size

    A child's size zero is equivalent to 4 inches (a hand = 12 barleycorns = 10.16 cm), and the sizes go up to size 13 + 1 ⁄ 2 (measuring 25 + 1 ⁄ 2 barleycorns, or 8 + 1 ⁄ 2 inches (21.59 cm)). Thus, the calculation for a children's shoe size in the UK is: child shoe size (barleycorns) = 3 × last length (in) − 12. equivalent to:

  9. List of examples of lengths - Wikipedia

    en.wikipedia.org/wiki/List_of_examples_of_lengths

    2 cm — approximate width of an adult human finger; 2.54 cm — 1 inch; 3.1 cm — 1 attoparsec (10 −18 parsecs) 3.5 cm — width of film commonly used in motion pictures and still photography; 4.3 cm — minimum diameter of a golf ball [32] 7.3-7.5 cm — diameter of a baseball [33] 8.6 cm × 5.4 cm — dimensions of a typical credit card [34]