Enhance your microscopic observations with this high-performance 40X Achromatic Microscope Objective, meticulously crafted from durable brass and designed to deliver bright, clear, and precise imaging. Featuring a coated lens with high transmittance and refractive index, this objective ensures superior brightness and clarity, making it an essential accessory for professional biological microscopes used in study, research, and work environments. Key Features: · **Brighter and Clearer Lens:** Advanced lens coating provides high light transmittance and refractive index for sharper, brighter, and clearer microscopic images. · **Protective Spring Mechanism:** Equipped with a spring protection device that automatically rebounds when the cover glass is encountered during observation, safeguarding the lens and specimen from damage. · **Durable Brass Construction:** Made from corrosion-resistant brass with fine workmanship and a chrome-plated shell, ensuring long-lasting durability and resistance to wear. · **Universal RMS Screw Interface:** Designed with an international standard RMS size (approx. 20.2mm / 0.8in) screw interface, compatible with approximately 95% of professional biological microscopes on the market for versatile use. · **40X High Magnification:** Provides clear and precise 40X magnification, ideal for detailed examination in scientific research, education, and laboratory work. Specifications: · Item Type: Achromatic Microscope Objective · Model: 40/0.65 · Material: Brass · Interface Size: Approx. 20.2mm / 0.8in (International Standard RMS) · Magnification: 40X · Numerical Aperture (NA): 0.65 · Cover Glass Thickness Compatible: 0.17mm · Mechanical Tube Length Applicable: Approx. 160mm / 6.3in · Working Distance: Approx. 0.53mm / 0.02in · Common Rail Distance: Approx. 195mm / 7.68in · Parfocal Distance: Approx. 45mm / 1.77in · Spring: Yes (automatic rebound protection) Package Includes: · 1 x 40X Achromatic Microscope Objective This 40X achromatic objective combines precision optics with robust construction and universal compatibility, making it an indispensable upgrade for enhancing the performance of your biological microscope. Its reliable protection features and outstanding optical quality ensure accurate and damage-free observations every time.