The mark consists of the words 'HI-REL LABORATORIES, INC.' in a bold font, underneath a graphical representation of a circuit. The circuit design includes a thick black line running horizontally across the center, branching off into various thin lines resembling circuit paths. Three circular icons are connected by this main line with the first icon on the left containing the initials 'hr' in a stylized lowercase font, the center icon features a microchip, and the right icon displays a microscope. Gray lines and nodes form a complex, symmetrical circuit pattern in the background.