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A cawnie is an obsolete unit of land area used in Chennai (formerly Madras) in India. It was approximately equal to 1.322 acres. In SI units that is 5349 square metres. After metrication in the mid-20th century, the unit became obsolete.
- Street's Indian And Colonial Mercantile Directory. 1869. p. 32
- "Cawnie". Sizes, grades, units, scales, calendars, chronologies. Retrieved 2007-02-19.
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