Print distances is a term used in the field of engineering. It refers to the process of measuring the distance between two points on a printed circuit board (PCB). This is done by using a specialized tool, such as a caliper or ruler, to measure the distance between two points on the PCB. The measurements are then used to determine the size and shape of the PCB, as well as the placement of components on the board. ENS is an abbreviation for Engineering Services, which is a type of service that provides engineering support to companies that design and manufacture PCBs.