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dust counter

noun

  1. any instrument used to measure the size and number of dust particles per unit volume in the atmosphere.

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Word History and Origins

Origin of dust counter1

First recorded in 1890–95

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Example Sentences

It is not nearly so accurate as the dust-counter; but it is cheaper, more easily wrought, and more handy for quick work.

To show the hazing effects of dust it is not, however, necessary to use a dust counter.

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