The pitch of a screw gauge is 1 mm and there are 100 divisions on the circular scale. In measuring the diameter of a sphere there are six divisions on the linear scale and forty divisions on circular scale coincides with the reference line. Find the diameter of the sphere.

The pitch of a screw gauge is 1 mm and there are 100 divisions on the

1.	The pitch of a screw gauge is 1 mm and there are 100 divisions on the circular scale. In measuring the diameter of a sphere there are six divisions on the linear scale and forty divisions on circular scale coincides with the reference line. Find the diameter of the sphere.
Answer» Solution :`L.C. = (1)/(100)= 0.01 mm` Linear SCALE reading 6(pitch) = 6 mm CIRCULAR scale reading `40 x× 0.01 = 0.4` mm Total reading = (6 + 0.4) = 6.4 mm