Question

Why are standard units of measurement needed?

Answer 1

Answer:

We need standard unit for measurement to make our judgement more reliable and accurate. For proper dealing, measurement should be same for everybody. Thus there should be uniformity in measurement. For the sake of uniformity we need a common set of units of measurement, which are called standard units.

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Answer 2

If there is no standard unit of measurement at every place measurement is different.

Quantity is not equal

Difference between 1meter at every place.