Question

What precautions should be taken while measuring length?
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Answer 1

Answer:

Place the ruler in contact with object along its length.

If the zero mark is not clear use any other full mark of the scale, subtract reading of this mark from the reading at other end. ...

Your eye must be exactly in front of the point where the measurement is to be taken..

Answer 2

Two precautions are :

1. The initial point of distance must coincide with the zero reading of meter scale.

2. The eye should be kept in line with the point of measurement.

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