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  2. Linear scale - Wikipedia

    en.wikipedia.org/wiki/Linear_scale

    The length of the line on the linear scale is equal to the distance represented on the earth multiplied by the map or chart's scale. In most projections, scale varies with latitude, so on small scale maps, covering large areas and a wide range of latitudes, the linear scale must show the scale for the range of latitudes covered by the map. One ...

  3. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    Below NPS14, the NPS number is not consistent with the pipe diameter in inches. Copper tubing, however, is measured in nominal size, 1 ⁄ 8 inch less than the outside diameter. The Schedule system is used for standard pipe thicknesses. Alcohol content is frequently given in proof, 2 × percent alcohol by volume; The cord is used for volume of ...

  4. Inch by Inch (children's book) - Wikipedia

    en.wikipedia.org/wiki/Inch_by_Inch_(children's_book)

    The book tells the story of an inchworm who likes to measure everything. The book was a recipient of a 1961 Caldecott Honor for its illustrations. [1] The original version of Inch by Inch had no page numbers. [2] This book was also published by Astor-Honor and Scholastic Book Services in 1960; most of these versions had page numbers and 26 pages.

  5. 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]

  6. Scale ruler - Wikipedia

    en.wikipedia.org/wiki/Scale_ruler

    A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length; two common examples are an architect's scale and engineer's scale.In scientific and engineering terminology, a device to measure linear distance and create proportional linear measurements is called a scale.

  7. The Metric Marvels - Wikipedia

    en.wikipedia.org/wiki/The_Metric_Marvels

    Meet Meter Man" / Superhero Meter Man helps people convert length and distance to metric terms "Mara-Mara-Marathon" / The difference between miles and kilometers "I'm Your Liter Leader" / Superhero Liter Leader explains the difference between gallons and liters "Eeny, Meeny, Miney Milliliters" / Liter Leader uses recipes to explain milliliters

  8. Metre - Wikipedia

    en.wikipedia.org/wiki/Metre

    The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of ⁠ 1 / 299 792 458 ⁠ of a second , where the second is defined by a hyperfine transition frequency of ...

  9. Unified Code for Units of Measure - Wikipedia

    en.wikipedia.org/wiki/Unified_Code_for_Units_of...

    Units are represented in UCUM with reference to a set of seven base units. [5] The UCUM base units are the metre for measurement of length, the second for time, the gram for mass, the coulomb for charge, the kelvin for temperature, the candela for luminous intensity, and the radian for plane angle.