Features Durable Aluminum Alloy Construction - Made from high-quality aluminum, this filter is resistant to scratches and deformation, ensuring long-lasting performance for your observations Precision CNC Manufacturing - High-accuracy production guarantees consistent size and color uniformity, meeting stringent standards for optimal viewing experiences Superior Light Transmission - Designed with a high-transmittance filter that minimizes impurities, enhancing light transmission for clear and detailed celestial observations Compact and Lightweight Design - This filter is easy to store and transport, making it a perfect addition to your gear without adding unnecessary bulk Versatile Compatibility - Ideal for use with astronomical telescopes, this accessory effectively reduces light pollution, enabling safer and more precise observations of celestial bodies Features: 1、 and . 2、Large full page fresnel magnifying sheet with black vinyl frame. 3、 for reading books, looking up telephone numbers, scanning maps, etc. 4、This is a flexible plastic sheet which acts like a large magnifying glass. 5、Magnify an entire page at one time. Specification: Description: and . Large full page fresnel magnifying sheet with black vinyl frame. This is a flexible plastic sheet which acts like a large magnifying glass. Magnify an entire page at one time. for reading books, looking up telephone numbers, scanning maps, etc. Model: 2123 Material: PVC Lens+PU Leather border Size (LxW): Approx. 30.5 x 19.5 cm (Please allow 1-3 mm error.) Magnifying Power: 3X Package Includes: 1 x A4 Full Page Glass Sheet Magnifier Package List