Question

What the precaution we rud to show take while reasuring
the lenght of the a box, if the and is tror brokin​

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.

Answer 2

Answer:

Two precautions are :

(i) The initial point of distance must coincide with the zero reading of meter scale.

(ii) The eye should be kept in line with the point of measurement.