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Four measuring devices having metric calibrations. Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events.
A typical twin mountain drawing. A drawing of twin mountains (Indonesian: pemandangan gunung kembar, "twin mountain view", or pemandangan gunung legendaris, "legendary mountain view") is a drawing pattern commonly made by Indonesian kindergarten and primary school students.
Textile fibers, threads, yarns and fabrics are measured in a multiplicity of units.. A fiber, a single filament of natural material, such as cotton, linen or wool, or artificial material such as nylon, polyester, metal or mineral fiber, or human-made cellulosic fibre like viscose, Modal, Lyocell or other rayon fiber is measured in terms of linear mass density, the weight of a given length of ...
The SI comprises a coherent system of units of measurement starting with seven base units, which are the second (symbol s, the unit of time), metre (m, length), kilogram (kg, mass), ampere (A, electric current), kelvin (K, thermodynamic temperature), mole (mol, amount of substance), and candela (cd, luminous intensity).
The former Weights and Measures office in Seven Sisters, London Units of measurement, Palazzo della Ragione, Padua. A unit of measurement, or unit of measure, is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. [1]
Ancient Greek texts show that the span was used as a fixed measure in ancient Greece since at least archaic period.The word spithame (Greek: "σπιθαμή"), "span", [4] is attested in the work of Herodotus [5] in the 5th century BC; however, the span was used in Greece long before that, since the word trispithamos (Greek: "τρισπίθαμος"), "three spans long", [6] occurs as early as ...
Cincinnati Customs House c. 1850–60 Governments were one of the earliest users of weights and measures – often for the purpose of tax collection. In the United States the US Treasury rather than Congress took the lead in establishing a standard system of weights and measures.
In metrology, measurement uncertainty is the expression of the statistical dispersion of the values attributed to a quantity measured on an interval or ratio scale.. All measurements are subject to uncertainty and a measurement result is complete only when it is accompanied by a statement of the associated uncertainty, such as the standard deviation.