Cubic inches
Cubic inches are units of volume measurement used in the Imperial systems equal to the volume of a cube with sides that are each one inch in length. It is used in the United States for measuring small volumes, such as the displacement of an engine or the capacity of a container. One cubic inch is equivalent to approximately 16.387 cubic centimeters.
US federal barrels
A Federal US Barrel is 31 gallons which is about 117.35 liters. This unit is normally used for apples, potatoes and other agricultural products.