- Extension Thickness: 12.5mm. M42 0.75 External Thread Length: 3mm. - M42 0.75 Internal Thread Length: 5mm. Type: Monocular. Enhance your microscopy experience with this durable extension. The precise dimensions ensure seamless compatibility with your existing equipment, allowing for greater versatility in your observations. Key Benefits: - Improved Focus : The extension increases the working distance, providing clearer and more detailed images. - Versatile Compatibility : Designed specifically for M42 0.75 threads, ensuring it fits perfectly with standard components. - Quality Construction : Made from high-quality materials for durability and long-lasting performance. Applications: - Microbial Studies : Ideal for viewing small specimens in detail, perfect for microbiologists or students. - Gemology : Use the extension to examine gemstones closely, revealing hidden details that aid in identification. - Botanical Research : Great for botanists studying plant cells and structures, allowing intricate analysis of samples. Additionally, we offer a comprehensive selection of accessories for your microscopy needs, including lenses and preparation kits, ensuring you have everything required for optimal performance.