The moisture meter can quickly measure the moisture content of the grain. 1. HIGH PERFORMANCE: The lens has a coating, with high light transmittance and refractive index, and the image is brighter and clearer. 2. PRESSURE DEVICE: With the spring-loaded safety device, the glass cover can be automatically bounced off when it is observed to avoid crushing the sample. 3. DURABLE MATERIAL: Made of excellent brass, and the coating is chrome plated, with excellent workmanship, resistant to corrosion and falls. 4. STANDARD INTERFACE: Adopt international standard 20,2mm RMS screw interface, which can be used by most professional biological microscopes. 5. 100X magnification: The lens of the microscope lens has a high power 100X magnification, the numerical value is accurate, and the operation is convenient. Please allow slight dimension error due to manual measurement. Item Type: Lens Model: 100/1,25 Material: Brass Application: microscopic accessories Interface Size: Approx. 20,2mm/0,8inch (International Standard RMS Size) Magnification: 100X Numerical aperture: 1,25 mm Applicable thickness of the curtain glass: 0,17 mm Microscope applies Mechanical Tube Length: Approx. 160 mm / 6,3 inch Working distance: 0.13mm Impregnation agent: cedar oil Spring: Yes (automatic reflection) Common Rail Distance: Approx. 195 mm / 7,7 inch Paraphocal distance: approx. 45 mm / 1,8 inch How to use: 1. It can be used when combined with a microscope. 2. In order to facilitate observation, it is recommended to start the observation from a small magnification. It is more difficult to adjust at high magnification than at low magnification. According to the characteristics of the observed specimen, not all patches are suitable for observation at high magnification. List of packages: 1 x lens 1 x storage box