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
Malay units of measurement sub measurements of 4 Churpak, or 8 Leng, or 16 Chentong. Churpak equals a Quart. Leng equals a Pint. Chentong equals a Cup.<ref> "Chentong" is also normally used only in certain areas, and so eight "leng" makes up a "gantang". When used to measure unhusked rice, a "gantang" weights about . Malay units of measurement Units of measurement used in Malaysia and neighbouring countries include the "kati", a unit of mass, and the "gantang", a unit of volume. In measuring amount by mass, the common unit is "kati", which is about 1 lb (604.79 g). A higher unit is "pikul"