Spinning count is a measure of fibre fineness and distribution developed by the English. It is defined as the number of
s of yarn that can be spun from a
pound of wool. A hank of wool is 560
yard
The yard (symbol: yd) is an English unit of length in both the British imperial and US customary systems of measurement equalling 3 feet or 36 inches. Since 1959 it has been by international agreement standardized as exactly 0.914 ...
s long (560 yd/lb = 1.129 km/kg). In theory a pound of 62s wool could produce 34720 yards of yarn.
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]
As it is now a relatively simple matter to measure the average fibre diameter and distribution, spinning count is being replaced with the specification of average fibre diameter in
micrometers
The micrometre (American and British English spelling differences#-re, -er, international spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American and British English spelling differences# ...
and fiber distribution in
standard deviation
In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while ...
s.
See also
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S number (wool)
S, or s, is the nineteenth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ess'' (pronounced ), plural ''esses''.
Histor ...
*
Wool measurement
A micron (micrometre) is the measurement used to express the diameter of wool fibre. Fine wool fibers have a low micron value. Fibre diameter is the most important characteristic of wool in determining its value.
Every fleece comprises a very w ...
References
{{United States Customary Units
Spinning
Imperial units
Customary units of measurement in the United States