Inch: At first an inch was the width of a man’s thumb. In the 14th century, King Edward II of England ruled that 1 inch equalled 3 grains of barley placed end to end lengthwise. Hand: A hand was approximately 5 inches or 5 digits (fingers) across. Today, a hand is 4 inches and is used to measure horses (from the ground to the horse’s withers, or shoulder). Span: A span was the length of the hand stretched out, about 9 inches. Foot: In ancient times, the foot was 111/42 inches. Today it is 12 inches, the length of the average man’s foot. Yard: A yard was originally the length of a man’s belt or girdle, as it was called. In the 12th century, King Henry I of England fixed the yard as the distance from his nose to the thumb of his out-stretched arm. Today it is 36 inches. Cubit: In ancient Egypt, a cubit was the distance from the elbow to the fingertips. Today a cubit is about 18 inches. Lick: A Lick was used by the Greeks to measure the distance from the tip of the thumb to the tip of the index finger. Pace: The ancient Roman soldiers marched in paces, which were the length of a double step, about 5 feet; 1,000 paces was a mile. Today, a pace is the length of one step, 21/2 to 3 feet.
Inch = 0.083 feetFoot = 12 inchesYard = 3 feet or 36 inchesMile = 5,280 feet or 1,760 yards
Around the earth (at the equator): 24,901 milesAcross the continental U.S.: 3,000 milesFrom the earth to the moon: 238,854 milesFrom the earth to the sun: 93,000,000 miles
