GREY CARAT SCALE MANUAL USER

It is used for measuring gemstones and pearls.[1] The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures,[2][3] and soon afterwards in many countries around the world.[i] The carat is divisible into 100 points of 2 mg. Other subdivisions, and slightly different mass values, have been used in the past in different locations.

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