chang

1

In Mongolia , 20^th century, a unit of length, 3.50 yards (approximately 3.2 meters).

2

In Thailand, 19th – 20^th century, a unit of mass, = 1.2 kilograms.

At the request of the Siamese government, the platinum-iridium prototype of the chang was evaluated by the Standards Dept. of the English Board of Trade in 1876. They found it to equal 2.674761 imperial pounds in a vacuum, and in air 2.675007 pounds.

Foreigners often called the chang the “Siamese catty.”

3

In China, a unit of length, one of the Treaty measures, = 141 inches (about 3.581 meters) = 10 ch’ih. The modern romanization of this word is zhang, which see for the unit in other contexts.