This set of micrometers will help you make a quantitative analysis of the microscopic world and greatly expand the functions of your microscope. 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. Features - Color: Transparent. - Material: Glass. - Size: 1.80 x 1.80 x 0.20cm/ 0.71 x 0.71 x 0.08 inch. - Micrometer net left engraved with 10 of grid lines, each cell is L / 20. - The eyepiece rectangles grid size, length and width ratio of 2:1, which is L long, L/2 wide. - The product is great for calibrating your microscope or microscope camera reticles. - micrometer is used in place of the standard eyepiece of the microscope. - There are two crossed rulers inside the eyepiece micrometer. Package list: 1 x eyepiece