Abstract: There is disclosed an electromechanical device which uses a digital depth ge micrometer with a probe in combination with a read-out voltmeter to provide automatically recordable profiles of impacted crater sections. The circuit electrically connected to the voltmeter has a Zener circuit which transposes the mechanical movement of the probe to readable and recordable electronic signal information. In one example of its use the recorded data refer to the profile of an exploded metallic crater formed by the impact of a shaped-charge ballistic warhead.