Features: Small size, light and portable. The scale is clear and the workmanship is exquisite. It is mainly used with electronic eyepieces, microscope cameras, and image processing software to measure microscopic objects. There is a circle with a diameter of 3 mm and a line thickness of 0.1 mm outside the shell line, to find the line when focusing. The compound micrometer is divided into five parts. There are four points with sizes 1.5 mm, 0.6 mm, 0.15 mm, and 0.07 mm. There is a crosshair scale in the middle, the total length of the X-axis and Z-axis scales is 1 mm, divided into 100 equal points, each point value is 0.01 mm transverse number. Specifications: Material: plastic Accuracy: 0.01mm Measuring range: 1Div=0.01mm Application for electronic eyepiece, microscope camera Size: Approx. 75x25x1.1 mm/2.95x0.98x0.04 inches Note: Please allow 1-2 cm error due to manual measurement, please make sure you don't mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x microscope slide