In the past, people have always tried their own ways of using daily measurements. It was needed and used for daily trade and other commercial activities. These things could only have been done if people had known they were being fair and honest; hence the reason why different measurements had to exist. Many short-distance measurements were based on the length of the human body. The width of an inch was used to resemble the inch, which we use today in the English measurement system. The foot, measuring twelve inches, was compared to the length of the human foot; however, today it is believed to be longer than most people's feet. The yard, which equals three feet, is believed to be the length from the tip of the nose to the end of the middle finger when the arm and hand are extended. The Anglo-Saxons of England also measured these short differences in their own way. The length of three barley grains was their length in inches (it was very close to the modern length). Then, in 1066, the Normans conquered England and brought the Roman tradition of the twelve-inch foot back to England. During the reign of Henry I the foot became official and was engraved on the base of a column in St Peter's Church in London (Rowlett, R. (2001). A Dictionary of Units of Measures. English Customy Weights and Measures). He also arranged for the shipyard to be established in England as well. Although inches, feet, yards etc. measured shorter distances, miles were used to measure much longer distances. This mile was a Roman unit, which was mainly 1,000 paces long of a Roman legion. The “pace” was supposed to be two paces, about five feet, measuring the mile at about 5,000 feet. The basic unit used for weight... half of the paper... Origin of the metric system). Currently, people in many countries use this SI unit for measurements. The meter is used to measure length (it can be converted into millimeters, centimeters, decimeters, kilometers, decameters and hectometers). Liter is used to measure volume and its conversions are similar to meter conversions. The gram is used to measure mass and its conversions also follow the meter conversions. Scientists all over the world make sure to use this metric system to communicate data and make all calculations easier. Although the vast majority of the world uses the metric system in daily activities, the United States, the United Kingdom, and other countries decide to still use English units on a daily basis. And even though everyone in the world may use different measurements every day, everything was created to make our lives a little easier every day.