A micrometer is a device for precisely measuring small distances or thicknesses. The precision is often achieved by a screw mechanism.
Micrometer is also the U.S. spelling of micrometre, a millionth of a metre or meter.
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... Karl Friedrich Rosenkranz (April 23, 1805 - July 14, 1879), German philosopher, was born at Magdeburg.
He read philosophy at Berlin, Halle and Heidelberg, ...