The system of weights and measurements adopted by the British Empire in 1824. The U.S. system is sometimes called the Imperial system; however, it is actually the United States customary units.

These standard units can be divided into two separate groups: imperial and metric. Depending on where you live, you might be more familiar with one than the other. In the past, people in the UK ...

In prehistoric times, not much needed to be measured. You ate what you found and lived where you could. The […] ...

So for example, a 10 kg dumbbell would be 22 lbs. Imperial units such as feet, pints, ounces and miles are used alongside metric units like metres, millilitres and kilometres. In the UK we use ...