Abstract
Dr. Erhard Mettler Switzerland was the first to apply the idea of having a balance with one pan and a beam with a constant load in 1945. The load on the beam is kept the same irrespective of the mass of the object weighed on it. It was a damped balance giving a constant indication in a short period. Because of the ease in getting mass of a body without much calculation, this type of balance became very popular in mid-fifties of twentieth century.
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Gupta, S.V. (2019). Single-Pan Mechanical Balances. In: Mass Metrology. Springer Series in Materials Science, vol 155. Springer, Cham. https://doi.org/10.1007/978-3-030-12465-6_3
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DOI: https://doi.org/10.1007/978-3-030-12465-6_3
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