Screw Gauge

Understanding Zero Error|Zero Error In A Vernier Caliper|Positive Zero Error|Negative Zero Error|Practice Exercise|Screw Gauge|Pitch Of A Screw Gauge|Least Count Of A Screw Gauge|Principle Of Screw Gauge|Method To Use Screw Gauge|Zero Error In A Screw Gauge|Positive Zero Error|Negative Zero Error|Practice Exercise|Summary

Diagrams show readings of a screw gauge. Figure (i) shows the zero error reading when the screw gauge is closed, figure (ii) the reading when the screw gauge is being used to measure the diameter of a ball-bearing. What is the diameter of the ball-earing ? There are 50 divisions on circular scale.

Answer the following :- screw gauge has a pitch of 1.0 mm and 200 divisions on the circular scale. Do you think it is possible to increase the accuracy of the screw gauge arbitrarily by increasing the number of divisions on the circular scale ?