Definitions
from The Century Dictionary.
- noun A screw attached to optical and mathematical instruments as a means of measuring very small angles.
Etymologies
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Examples
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The difference between the original reading and that of each measurement was noted, care being taken to regard the direction in which the screw was turned, and this gave the difference in length between the standard and each succesive portion of the steel tape in terms of turns of the micrometer-screw.
Experimental Determination of the Velocity of Light Made at the U.S. Naval Academy, Annapolis Albert A. Michelson 1891
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