Cover has illustration in center of a person wearing a white 'lab' coat, using a tool to adjust a part of machinery. This image is framed by a line border. At top left and bottom right of this centre image, two illustrations are framed within circles. The top depicts a person working on the engine of a vehicle. The bottom depicts a single propeller aircraft with two people working on the propeller engine. Text in varied font type above and below images. Three stacked line borders frame circumference.