Microscopes can be used not only to look at small things but also to measure them. Items seen in microscopes are very small, even a few millimeters are too big. As a result, micrometers are used. The micrometer is divided into an ocular micrometer and stage micrometer, and two kinds of micrometers are used together. An ocular micrometer is a glass disk with ruled scale on the surface which is in chromium. Features - Color: Transparent. - Material: Glass. - Size: 1.90X1.90X0.10cm/0.75X0.75X0.04 inch. - This micrometer will help you make a quantitative analysis of the microscopic world and greatly expand the functions of your microscope. - An appropriate combination of materials and visual micrometers can measure the diameter, length and dispersion of fine materials such as dust and fibers. - In addition, it can also be used to check whether the technical parameters of the microscope you are using are accurate, such as the magnification and line of view. - Therefore, this set of micrometers is a simple and practical inspection tool for all departments that use microscopes such as , , environmental protection, education, textile fiber inspection and so on. - An ocular micrometer is a glass disk with ruled scale on the surface which is in chromium. Package list: 1 x eyepiece micrometer