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Micrometer Calipers for Teaching the Discrimination of the Fineness of Wool

The University of Wyoming

Abstract

For any one who has good average vision, judging the fineness of wool is no more difficult than judging the size of trees. Both are a matter of practice and based on comparisons with known standards of size. Who could say that a given tree was five inches or seven inches in diameter if he had never measured a tree? No more can one say whether a fiber is five ten-thousandths or seven ten-thousandths of an inch in diameter if he has neither measured a fiber nor seen one measured.

Now there are many vocations which require a keen discrimination of the size of wool fibers. Those who deal in wool either as buyers or sellers and those who grade and sort wool, largely depend for their success upon a trained discrimination of fineness. In animal husbandry no one can hope to attain more than a fair success with sheep if he is not able to distinguish degrees of fineness with accuracy.