Published by:
CGP EDU Academic Team
Published on: August 23, 2026
In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal pitch line when their metallic studs are brought in contact. Using this instrument thickness of a sheet is measured. If pitch scale reading is 1 mm and the circular scale reading is 51 then the correct thickness of the sheet is 
mm. [Assume least count is 0.01 mm ]
Text Solution
Verified by ExpertsThe correct answer is:
C
Zero error 
Reading taken 
So, correct reading 
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