Comparator Watches

A dial gauge or dial gauge is a dimension measuring instrument that is used to compare dimensions by indirectly measuring the displacement of a spherical contact tip when the apparatus is fixed on a support. It consists of a gear or lever mechanism that amplifies the movement of the stem in a circular movement of the needles on circular graduated scales that allow obtaining measurements with an accuracy of hundredths or thousandths of a millimeter (microns) .There are also electronic comparators that use sensors of angular displacement of the gears and represent the value of the displacement of the stem in a display.

The face of the watch containing the graduated scale can be rotated so that the zero of the dial can be set coinciding with the hand and the following measurements can be made for comparison. The dial gauge must be fixed to a support, the base of which can be magnetic or mechanically fixed to a frame.

It is an instrument that allows to carry out dimensional controls in manufacturing quickly and precisely, which is why it is widely used in the inspection of the manufacture of products in large series.