Geographical mile longitude at the equator is thus exactly 60 geographical miles. It was closely related to the nautical mile, which was originally determined as 1 minute of arc along a great circle of the Earth, but is nowadays defined as exactly 1852 metres. The US National Institute of Standards and Technology (NIST) notes that: "The international nautical mile of 1 852 meters (6 076.115 49...feet) was adopted effective July 1, 1954, for use in the United States. The value formerly used in the United States was 6 080.20 feet = 1 nautical (geographical or sea) mile." (6080.2 feet is 1853.24496 meters.)
Seer (unit) Seer (unit) A Seer (also sihr) is a traditional unit of mass and volume used in large parts of Asia prior to the middle of the 20th century. It remains in use only in a few countries such as Afghanistan and Iran, although in the latter it indicates a smaller unit of weight than the one used in India. In India, the seer (Government seer) was defined by the Standards of Weights and Measures Act (No. 89 of 1956, amended in 1960 and 1964) as being exactly equal to 1.25 kg (1.792 lb). However, there were many local variants of