The circular scale of a screw gauge has 50 divisions and pitch of 0.5 mm. Find the diameter of sphere. Main scale reading is 2.

The circular scale of a screw gauge has 50 divisions and pitch of 0.5

1.	The circular scale of a screw gauge has 50 divisions and pitch of 0.5 mm. Find the diameter of sphere. Main scale reading is 2.
Answer» 1.2 MM 1.25 mm 2.20 mm 2.25 mm Solution :Least COUNT `=("PITCH")/("NUMBER of division on circuit scale")=0.5/50` `=0.01 mm` Now, diameter of ball `=(2xx0.5)+(2.5-5)(0.01)=1.2 mm`