tola

In India, Pakistan, Aden, and Goa, ? – 20th century, a unit of mass = 180 grains, (approximately 11.664 grams). In India this value was legalized by the Standards of Weight Act IX of 1939.

The tola was the legal weight of 19th-century Indian coins: the silver rupee and the gold mohur. In India, 1956 – present, the act that established the metric system¹ defined the tola as exactly 0.011 663 8 kilogram.

In Zanzibar the tola is slightly lighter, 11.398 grams. (UN 1966)

1. Standards of Weights and Measures Act (No. 89 of 1956, amended in 1960 and 1964). See the First Schedule.