A surface tester for measuring the micro profile of the cylinder surface is a special device that is used to measure the microtopography of the surface of cylindrical parts, such as piston rings, engine cylinders and others. The measurement is carried out with high accuracy and allows you to determine the parameters of the micro profile of the surface, such as roughness, profile depth and others. When it comes to the quality of honing, experts usually refer to their experience - "the surface should shine", "the surface should be such that the piston creates a smooth noise when moving", "the surface should have a flat top", etc. All these assessments are subjective. For an objective assessment of the surface quality, a device is needed with which you can quickly and accurately make measurements.