Measuring spindle I slides in guide b and bears against workpiece
a being inspected. Spindle 1 moves capacitor plate 3
which is m ounted on flat spring 4. Movable plate 3 and fixed
plates 2 and 5 are the plates of two capacitors, 3 and 5, and 3
and 2, whose capacitances depend upon the size of the workpiece.
The differential effect in the v ariation of the capacitances
increases the accuracy w ith which the size of the workpiece
can be measured.
$4345$SmE,M$