Unit of liquid capacity, the value of which depends on the liquid being measured. It is used for petroleum, a barrel of which contains 159 litres/35 imperial gallons; a barrel of alcohol contains 189 litres/41.5 imperial gallons.
The red disc, set towards the hoist, recalls the fight for independence. Green represents Islam, fertility, and the country's youth. Effective date: 25 January 1972.