What the three precation requrired while measuring mass
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Explanation:
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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1)The scale should be placed to the side of the object being measured. It should also be in touch with the object being measured.
2)While reading the scale, eye must be placed vertically above the scale mark being read.
3)If the the eye is not vertically above the scale mark being read, then the reading becomes wrong.
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