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gantha

In the northwest provinces of India, 19ᵗʰ century, a unit of length used in surveying, about 2¾ yards. In Gujerat, 7 feet 5.6 inches. Elsewhere said to be another name for the bans.

sources

Ganṭhá H[indi]. () A fractional part, one twentieth of a jaríb, equal to three gaz. In Guz[arathi] the Ganṭhá () is a measure of eight feet in length, or rather 7 feet 5 6/10 inches: in some places the Ganṭhá is the same as the Báns or standard rod = 20 feet 5¼ inches.

H. H. Wilson, 1855, pages 166 and 577.