Features Multiple Specifications: The calibration slide ruler is available in various specifications ranging from 0.01mm to 10mm, providing professional users in microscopy analysis and specimen examination with accurate measurement and calibration options to suit their specific needs. Accurate Measurements: With a minimum measurement accuracy of 0.01mm, the calibration camera slide ruler ensures accurate and credible measurements, meeting the high accuracy requirements of professionals for microscopy observation and analysis. Wide Applications: The microscope calibrating ruler is not only suitable for microscope measurement and calibration but also for specimen examination, offering versatility in scientific research, laboratory work, educational environments, and other fields requiring microscopy analysis. Secure Packaging: The microscope calibration sheet is securely packaged in a box with sponge inserts to ensure luxurious and safe storage and transportation. The protective packaging helps maintain the integrity of the slide rulers and provides convenient handling for users. Excellent SiO2 Material: This microscope camera calibration slide is made of excellent SiO2 material, which is strong and abrasion resistant, not easy to damage, long service life and can be used in a variety of situations. Specification: Item Type: Microscope Calibration Ruler Model: KP-0.01Y mm Material: SiO2 Size: Approx. 0.01mm / 0.00039in, 0.05mm / 0.00197in, 0.1mm / 0.00394in, 1mm / 0.03937in, 5mm / 0.19685in, 10mm / 0.39370in Thickness: Approx. 1mm / 0.03937in How to Use: Use with microscope lens. packing list: 1 x Microscope Calibration Ruler 1 x Storage Box Package List 1 x Microscope Calibration Ruler 1 x Storage Box