A hand (or handbreadth) is a unit of length
measurement, usually based on the breadth of a
male human hand and thus around 4 inches long (about 10
cm). When used to measure height, it is abbreviated "h" (for "hands") or "hh" (standing for "hands high")Today it is primarily used to describe the height of
horses,
ponies, and other
equines in a number of different countries, including the
USA,
Australia, and the
UK. In this context, one hand equals four
inches (10.16 cm), and the horse is measured from the ground to the top of the
withers. So a horse that is 15 hands high (abbreviated 15 hh) is 60 inches (152 cm) from the ground to the top of the withers. Instead of
decimal or vulgar
fractions, a hand comprises four inch-long steps, so a horse 62 inches (157 cm) tall would be 15.2 hh (said “fifteen two hands high”).
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