Question

When taking measurements with any measuring tool, is there a rule that says you should always record the unit of measurement? Why?

Answer 1

While measuring a quantity we compare its value with standard unit
Across the world people use different units to measure same
quantity.For example distance is measured in KM in many part
of the world<In U.S distance is measured in miles.So when
someone says distance is 5 it wont make sense to people and
the number itself become meaningless without unit.

In lab also we can measure same thing using different units
For example length is measured in m,cm,mm etc
In calculation part there will be a mix of units. and
units must be equal in both sides of the final equation.If you wont
use proper unit your final result will be wrong.
So we should always mention the unit while recording the data

THANK YOU!