Thai units of measurement
Thailand uses the metric system for measurements: meters and kilograms. However, Thai units like rai are still in common use, especially for measurements of land areas. A rai is a unit of area equal to 1,600 square meters. In the North of the country antique animal-shaped weights are used. Besides, at the Chiang Mai marketplace, northern Thailand, small bronze opium weights in various animal forms like dragons, birds and others can be seen.