The diameter of a cylinder is measured using vernier callipers with no zero error. It is found that the zero of the vernier scale lies between 5.10 cm and 5.15 cm of the main scale. The vernier scale has 50 divisions equivalent to 2.45 cm. The division of the vernier scale exactly coincides with one of the main scale divisions. The diameter of the cylinder is :
5.124 cm
6.324 cm
8.624 cm
3.624cm
The main scale can measure 5.10 and 5.15
Therefore Main scale division(s)=0.05 cm
Also, vernier scale division (v)=
Thus, least count =0.05-0.049=0.001 cm
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