The moisture meter can quickly measure the moisture content of the grain. 1. High-quality eyepiece with full multi-layer coating, you can enlarge do any focal distance from 7 mm do 21 mm, choosing the best magnification for the photographed object. 2. Do view the moon, planet, nebulae, star clusters and other landscapes of celestial bodies and astronomical observations, high dispersion, wide field of view, very convenient. 3. Good build quality, suitable for 1.25 inch/31.7mm astronomical telescope. 4. Eyepiece magnifying not only eyepiece, large magnification do small magnification, short focal length do telescope, easy adjustment of proportions, very practical. 5. Professional production, metal body, surface coating, excellent optical parameters. . 25 inch eyepiece angle 80-degree multi-layer . 25 inch eyepiece angle 80-degree multi-layer . 25 inch eyepiece angle 80-degree multi-layer Specification: Item Type: Eyepiece Material: aluminum alloy optical glass Black color Quantity: 1 piece Focal distance: continuous zoom 7-21 mm do lens coating film: broadband green film Weight: approx. 168g Interface size: approx. 31,7 mm/1,25 inch . 25 inch eyepiece angle 80-degree multi-layer . 25 inch eyepiece angle 80-degree multi-layer . 25 inch eyepiece angle 80-degree multi-layer List of packages: 1 x Eyepiece . 25 inch eyepiece angle 80-degree multi-layer . 25 inch eyepiece angle 80-degree multi-layer . 25 inch eyepiece angle 80-degree multi-layer