The system of imperial units or the imperial system is the system of units first defined in the British Weights and Measures Act of 1824, which was later refined and reduced. The system came into official use across the British Empire.
The Imperial system.
Feet and inches are part of the Imperial measurement system.
European measurement system
US system, or imperial system.
The Imperial System.
Tradition.
Imperial and metric
generally the imperial system
The measurement system is in milliliters. Gallons are British (the Imperial system of measurement), or, slightly smaller, American. Gallons are not part of the metric system, thus are not measures in millilitres.
they are metric and imperial.
Imperial and Metric Systems.
The inch-pound system is commonly referred to as the English system of measurement or the British imperial system. It is a system of measurement where distances are measured in inches and weights are measured in pounds.