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A metre-stick, metrestick (or meter-stick and meterstick as alternative spellings); [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.
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]
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Efforts to standardise measurements can be traced back at least as far as the 10th century Saxon king Edgar in England. [8]: 73 These efforts continued in the United Kingdom culminating in the Imperial system of measurement established by the Weights and Measures Act 1824. British exploration and colonisation and trade spread these standard but ...
The basic idea behind a transit-time measurement of length is to send a signal from one end of the length to be measured to the other, and back again. The time for the round trip is the transit time Δt, and the length ℓ is then 2ℓ = Δt*"v", with v the speed of propagation of the signal, assuming that is the same in both directions.
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The "measuring rod" or tally stick is common in the iconography of Greek Goddess Nemesis. [32] The Graeco-Egyptian God Serapis is also depicted in images and on coins with a measuring rod in hand and a vessel on his head. [33] [34] The most elaborate depiction is found on the Ur-Nammu-stela, where the winding of the cords has been detailed by ...