A screw gauge gives the following readings when used to measure the diameter of a wire
Main scale reading : 0 mm
Circular scale reading : 52 divisions
Given that 1 mm on main scale corresponds to 100 divisions on the circular scale.
The diameter of the wire from the above data is :
Answer & explanation
Correct answer: option 3
1oo div = 1 mm
1 div = 0.01 mm ; 52 div = 0.52 mm
Total reading = MSR + CSR = 0.52 mm = 0.052 cm