US oil barrels
A US oil barrel, also known as a petroleum barrel, is a volume unit used in the oil and gas industry to measure crude oil or liquid petroleum gas (LPG). One US oil barrel is 42 US gallons or about 159 liters.
UK teaspoons
A UK teaspoons is a common unit used in cooking and baking. A UK teaspoon is aligned with the metric teaspoon at 5 milliliters.