An official system of weights and measures was established in the ancient Persian Empire under the Achaemenid dynasty (550-350 BCE). The shekel and mina ("profane" or "sacred") were units of both weight and volume. A shekel or mina weight was equal to the weight of that volume of water. The talent was a measure of weight used for large amounts of coinage. Some related units were used in Persia in the 19th century, and are still used in contemporary Iran. Ancient Persian units Length Volume The shekel and mina ("profane" or "sacred") were units of both weight and volume. A shekel or mina weight was equal to the weight of that volume of water. Note that the values given for the mina do not match the definitions. 1 shekel = 8.3 ml (approximately 1 cubic aiwas). 1 profane mina = 50 shekel = 500 ml (approximately 27 cubic aiwas). 1 sacred mina = 60 shekel = 600 ml (approximately 1 cubic dva). 1 talent (volume) = 60 profane mina = 25 liters (approximately 1 cubic trayas). Weight The talent was a measure of weight used for large amounts of coinage (bullion, bulk coin), rather than an individual coin. Seven Babylonian talents equalled ten Attic talents, according to a list of the revenues of Cyrus the Great (Cyrus II of Persia) recorded in Herodotus. 𐎣𐎼𐏁 (karša) or 𐎣𐎼𐏁𐎹𐎠 (karšayā) is a unit of weight equal to 10 Babylonian shekels or Babylonian mina weighing approximately . Units used in modern Persia (Iran) Some related units were used in Persia in the 19th century, and are still used in contemporary Iran. Length 1 arsani or ulna = 52-64 cm. 1 arish = 1 chebel = 40 arsani = 21-25 meters or 23-30 yards. 1 farsang (parasang) = 6.23 km in 19th century Persia. 1 farsang = 10 kilometers in modern Iran and Turkey. Volume 1 chenica = 1.32 liters. References Obsolete units of measurement Human-based units of measurement Systems of units Units of measurement by country