“Microscope” is the essence of this lens system. It is a true microscope and not an endoscope, as most ECU probe lenses are.

An endoscope consists of a front lens and the image is relayed through the tube. The TS-160 is a a microscope where the aerial image of the front lens is magnified. As a result, the contrast, resolution and depth of field of the TS-160 are greater.