what are the precautions taken to measure with a metric ruler?
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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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State the precautions which should be taken while using a metre scale to measure the length of an object.
- Keep the ruler exactly along the length to be measured.
- Avoid using worn out portions of the ruler.
- Keep the eye vertically above the point where the measurement is to be taken.
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