Enhance your microscopy experience with this high-performance 40X Achromatic Microscope Objective, designed to deliver brighter and clearer images for detailed study, work, or research. Crafted from corrosion-resistant brass and featuring precision workmanship, this objective lens ensures durability and long-lasting use. Its protective spring device automatically rebounds when encountering the cover glass, safeguarding specimens from damage during observation. Compatible with most professional biological microscopes, this objective offers reliable and practical functionality for scientific and educational applications. Key Features: · Exceptional Image Clarity: Coated lens with high transmittance and refractive index provides brighter, sharper, and clearer images for precise observation. · Protective Spring Device: Equipped with an automatic rebound spring mechanism to protect specimens by preventing lens crushing during use. · Durable Brass Construction: Made from corrosion-resistant brass with chrome plating, ensuring long-term durability and resistance to wear. · Universal RMS Screw Interface: Standard international RMS screw size (approx. 20.2mm / 0.8in) compatible with 95% of professional biological microscopes on the market. · 40X High Magnification: Powerful 40X magnification ideal for detailed biological study, laboratory work, and research applications. Specifications: · Item Type: Achromatic Microscope Objective · Model: 40/0.65 · Material: Brass (chrome plated) · Interface Size: Approx. 20.2mm / 0.8in (international RMS standard) · Numerical Aperture (NA): 0.65 · Cover Glass Thickness: 0.17mm · Microscope Mechanical Tube Length: Approx. 160mm / 6.3in · Working Distance: Approx. 18mm / 0.71in · Common Rail Distance: Approx. 195mm / 7.68in · Parfocal Distance: Approx. 45mm / 1.77in · Spring Protection: Yes (automatic rebound) Package Includes: · 1 x 40X Achromatic Microscope Objective Lens This achromatic microscope objective lens is an essential accessory for professionals and enthusiasts seeking enhanced image clarity, reliable protection, and compatibility with a wide range of microscopes. Its precision design and robust construction offer outstanding performance for biological observation and research.