Question

what are the basic precaution to be taken while measuring
length ?​

Answer 1

Answer:

Care should be taken to keep the ruler along the length of the object. If the edge of the ruler is worn out or broken, the measurement should be started from any other mark that is fully clear. Eyes should be exactly above the point where the measurement is to be taken.

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Answer 2

Answer:

1. the instument will be used is correct(there is no wrong numbrimg on it)
2. you must know the measuring technique

Explanation: