In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal pitch line when their metallic st…

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]