thước

In Vietnam, ? – 20^th century, three units:

1) a unit of capacity for cereals, = 20 liters.

2) a unit of length, approximately 40 centimeters.

3) a unit of area, approximately 24 square meters.

In central Vietnam, 20^th century, a unit of length, the thước may is approximately 62.5 centimeters and the thước moc, approximately 40 centimeters.