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Using a dipstick to measure the amount of fuel remaining in a tank The lower end of an oil dipstick with markings for minimum and maximum oil levels. Dipsticks can also be used to measure the quantity of liquid in an otherwise inaccessible space, by inserting and removing the stick and then checking the extent of it covered by the liquid.
Metrology is a wide reaching field, but can be summarized through three basic activities: the definition of internationally accepted units of measurement, the realisation of these units of measurement in practice, and the application of chains of traceability (linking measurements to reference standards).
Early Lufkin logo. The company was founded by Edward Taylor Lufkin, an American Civil War veteran of the Sixtieth Regiment Ohio Volunteer Infantry [1] in Cleveland, Ohio, 1869 [2] and was originally named E.T. Lufkin Board and Log Rule Manufacturing Company.
In metrology (the science of measurement), a standard (or etalon) is an object, system, or experiment that bears a defined relationship to a unit of measurement of a physical quantity. [1] Standards are the fundamental reference for a system of weights and measures , against which all other measuring devices are compared.
The survey's measure of prices paid by manufacturers dropped to 52.1, the lowest reading since December, from 57.0 in May. Declining goods prices accounted for much of the unchanged reading in ...
Reagent strip tests can detect concentrations as low as five red blood cells per microliter; however, care must be taken when comparing these figures with the actual microscopic values, because the absorbent nature of the pad attracts some of urine. The terms trace, small, moderate, and large (or trace, 1+, 2+, and 3+) are used for reporting.
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After over 100 people were killed in a South Korea plane accident, here are the worst accidents and crashes in aviation history.