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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]
National examination in Indonesia. National Exam (Indonesian: Ujian Nasional, commonly abbreviated as UN or UNAS) [1] was a standard evaluation system of primary and secondary education in Indonesia and the determining factor of quality of education levels among the areas that are conducted by the Center for Educational Assessment of the Ministry of Education and Culture.
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.
Particle size analysis, particle size measurement, or simply particle sizing, is the collective name of the technical procedures, or laboratory techniques which determines the size range, and/or the average, or mean size of the particles in a powder or liquid sample.
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.
Countries using the metric (), imperial, and US customary systems as of 2019. United States customary units form a system of measurement units commonly used in the United States and most U.S. territories [1] since being standardized and adopted in 1832. [2]
The 2024 Hama offensive was a military operation launched by forces of the Syrian Salvation Government (SSG) and Turkish-backed [18] rebel groups of the Syrian Interim Government (SIG) during the 2024 Syrian opposition offensive, a phase of the Syrian civil war.