- any instrument used to measure the size and number of dust particles per unit volume in the atmosphere.
Origin of dust counter
First recorded in 1890–95
Also called nucleus counter.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for dust counter
It is not nearly so accurate as the dust-counter; but it is cheaper, more easily wrought, and more handy for quick work.Meteorology
J. G. M'Pherson