Why Are Units of Measurement Important in Engineering?
Any type of measurement, such as length and angle, needs both numbers as well as units to avoid misinterpretations. Without units, the numbers themselves have very little meaning.
For example, if you were to say that a line's length is 10, one person might assume it as 10 millimeters while the other may think it is 10 meters. But when you add a unit at the end that says "10 meters", there's no scope for uncertainty, thereby reducing the likelihood of errors.