Toise

A toise (French pronunciation: ​[twaz]; symbol: T) is a unit of measure for length, area and volume originating in pre-revolutionary France. In North America, it was used in colonial French establishments in early New France, French Louisiana (Louisiane), and Quebec. The related toesa (Portuguese pronunciation: [tuˈezɐ]) was used in Portugal, Brazil and other parts of the Portuguese Empire until the adoption of the Metric system.

According to an article written in 1866, during investigation of various measuring standards, the toise was determined to be 1,949.03632 mm.

Historical French unit. Early Louisiana in the United States.

...
Wikipedia