Shoe sizings
A barleycorn is a UK shoe sizing, where a barleycorn represents ? " (three barleycorns composing an inch appears in the 10th-century Welsh Laws of Hywel Dda); US shoe sizing is based on the same barleycorn unit but starts measuring at a smaller length of foot. A Paris point is ? cm, used first in France in the early 1800s, and commonly used in continental Europe. Mondopoint was developed in the 1970s by the International Organization for Standardization (ISO) to create a universal footwear sizing system and is used in Russia (in the old USSR) and East Asia; it is officially calculated by measuring the length and width of the foot in millimetres, although for ski boots it is simplified to being the measurement of the length of the foot in centimetres, from the heel to the big toe.
