Question

state three preacuations to be taken while measuring the lenght of an object by using a ruler ?
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Answer 1

Answer:

•Care should be taken to keep the ruler along the lenght of the object.

•If the edge of the ruler is worn out or broken, the measurement should be srarted from any other mark that is fully clear. ...

•Eyes should be exactly obve the point where the measurement is to be taken.

Answer 2

• To measure the length of an object, place the zero hash mark of the ruler exactly along one end of the object.
• Align the object you are measuring along the edge of the ruler.
• Note the hashmark on the ruler along which the other side of the object ends.