Hand (unit) inches for the handsbreadth; Mortimer gives the same, three inches for the Hand's-breadth, and four for the "Handful, or simply, Hand", but adds "The hand among horse-dealers, &c. is four-fingers' breadth, being the fist clenched, whereby the height of a horse is measured", thus equating "hand" with both the palm and the fist. Similarly, Wright's 1831 translation of Buffon mentions "A hand breadth (palmus), the breadth of the four fingers of the hand, or three inches", but the "Encyclopædia Perthensis" of 1816 gives under Palm (4): "A hand, or measure of lengths comprising three inches". Today the hand is used
Unit measure Unit measure Unit measure is an axiom of probability theory that states that the probability of the entire sample space is equal to one (unity); that is, "P"("S")=1 where "S" is the sample space. Loosely speaking, it means that "S" must be chosen so that when the experiment is performed, "something" happens. The term "measure" here refers to the measure-theoretic approach to probability. Violations of unit measure have been reported in arguments about the outcomes of events under which events acquire "probabilities" that are not the probabilities of probability theory. In situations such as these the term "probability" serves as