how to measure a horse height
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.