Measurement of dimensions

Dimensions of permanent magnets is measured by conventional lenghts gauges: a caliper or micrometer. Currently there are many instruments with digital display. It is necessary to verify that they are not sensitive to the presence of the magnetic field.

In case of more complex shapes in some cases it is necesary to meassure their dimensions and geometry (parallelism, concentricity, etc.) by special three-dimensional measuring devices with computer analysis.