In a screw gauge, there are 100 divisions on the circular scale and the main scale moves by 
on a complete rotation of the circular scale. The zero of circular scale lies 6 divisions below the line of graduation when two studs are brought in contact with each other. When a wire is placed between the studs, 4 linear scale divisions are clearly visible while 
division the circular scale coincide with the reference line. The diameter of the wire is 
Text Solution
Verified by Experts220
(220) Pitch 
L.C. 
Zero error 
L.C. 
Reading 
main linear scale reading 
L.C. 
zero error
Rading 
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