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makhzan

In Arabia, ? – 20ᵗʰ century, a unit of area = 75 square dhra's, about 45.37 square yards.¹

Another report of the same period describes two makhzans, the lesser 5 × 10 dhra' and the greater 5 × 15 dhra', taking the dhra' as 75 centimeters.²

1. Consul Bullard to the Marquess Curzon of Kedleston, October 31, 1923.
Foreign Office Annual Reports from Arabia, 1930-1960. Vol. 1, 1930-1934.
Archive Editions, 1993.
Page 58.

2. Field Notes on Sa'udi Arabia, 1935.
[British] Air Ministry, August 1936.
Page 127.
British Library: India Office Records and Private Papers, IOR/R/15/5/384.
[accessed 15 July 2020 in Qatar Digital Library https://www.qdl.qa/archive/81055/vdc_100000000831.0x0001d5]