Earth's circumference mile in the seventeenth century and the metre in the eighteenth. Earth's polar circumference is almost exactly 40,000 km because the metre was originally calibrated on this measurement (1/10-millionth of the distance between the poles and the equator), which is almost exactly 21,600 nautical miles (being defined as one minute of a degree – i.e. 360 multiplied by 60). It has been described as "the single most important measurement" of the Earth, assuming the Earth to be a sphere (the Earth is an technically an ellipsoid, albeit with just 0.3% flattening). Earth's circumference lines are the foundation of the coordinate
Libyan units of measurement Libyan units of measurement A number of different units of measurement were used in Libya to measure length, mass, area, etc. Metric system adopted in Libya in 1927. A number of different units were used. Several units were used to measure length. One pik was equal to 0.68 m as it was defined by metric equivalent. Some other units are given below (Note: these units too were defined by metric equivalents): 1 handaze = 1 pik 1 palmo = 1/3 pik 1 draa = 0.46 m. In tripoli, draa was equal to 26.42 in and arbi draa (lesser pik) was