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  2. Ruler - Wikipedia

    en.wikipedia.org/wiki/Ruler

    A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge, is an instrument used to make length measurements, whereby a user estimates a length by reading from a series of markings called "rules" along an edge of the device. [ 1] Usually, the instrument is rigid and the edge itself is a straightedge ...

  3. Scale ruler - Wikipedia

    en.wikipedia.org/wiki/Scale_ruler

    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.

  4. Tape measure - Wikipedia

    en.wikipedia.org/wiki/Tape_measure

    Plastic tape measure (cm) Manually reeled tape measure Self-retracting metal tape measure (US customary) Measuring tape capable of measuring down to 1 ⁄ 32 in (0.794 mm) Diagram showing fractions of an inch on a standard sixteenth measuring tape. A tape measure or measuring tape is a flexible ruler used to measure length or distance.

  5. History of the metric system - Wikipedia

    en.wikipedia.org/wiki/History_of_the_metric_system

    A fleeting hint of an ancient decimal or metric system may be found in the Mohenjo-Daro ruler, which uses a base length of 1.32 inches (33.5 mm) and is very precisely divided with decimal markings. Bricks from that period are consistent with this unit, but this usage appears not to have survived, as later systems in India are non-metric ...

  6. Meterstick - Wikipedia

    en.wikipedia.org/wiki/Meterstick

    A meterstick divided into 1,000 mm and labeled with 100 cm. A meterstick, metrestick, [1] or yardstick [2] is either a straightedge or foldable ruler used to measure length, and is especially common in the construction industry. They are often made of wood or plastic, and often have metal or plastic joints so that they can be folded together.

  7. 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 ...

  8. Scale (ratio) - Wikipedia

    en.wikipedia.org/wiki/Scale_(ratio)

    The scale ratio of a model represents the proportional ratio of a linear dimension of the model to the same feature of the original. Examples include a 3-dimensional scale model of a building or the scale drawings of the elevations or plans of a building. [ 1] In such cases the scale is dimensionless and exact throughout the model or drawing.

  9. Measurement - Wikipedia

    en.wikipedia.org/wiki/Measurement

    Process of assigning numbers to objects or events. For the scientific journal, see Measurement(journal). Four measuring devices having metric calibrations. Measurementis the quantificationof attributesof an object or event, which can be used to compare with other objects or events. [1][2]In other words, measurement is a process of determining ...

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