An apparatus and a method of screening a material containing a solid and fluid where the material is placed on an upper side of a screen element and the material is at least being acted on by vibrations produced by at least one acoustic sound source. Each print job may have a printing permission level associated therewith. Portions of one or more actuators can move the calibration standards between the imaging detector and a sample. The device is particularly useful for determining the volume fraction of water in a mixture of water and hydrocarbons. In the first position the abutment surface contacts a trigger bar of the firearm preventing movement of the trigger and discharge of the firearm while allowing the slide to be cycled and in the second position the abutment surface is not in contact with the trigger bar and the firearm can be discharged. Instead of coating, or plating, a PCB through-hole with an electrically conductive material to form a via the via is formed by placing a conductive stake, or conductive pin, in the through-hole.