Before standardized units of measurement like the foot, people used parts of their bodies to measure things. For example, the inch was the width of a man's thumb or the length of three grains of barley end-to-end. The length between outstretched arms was called a fathom. In 1150 Scotland and 1303 England began the process of standardizing units of length, redefining them as multiples of each other so they could be used simultaneously. In 1959, the United States, Canada, New Zealand, South Africa, Australia, and the United Kingdom signed the International Yard and Pound Agreement, which standardized the length and weight of all nations. These standards are still used in the Imperial system and US customary units today. The measurement we use today called “foot” is 12 inches long and was actually the length of King Henry I's foot.