Check the listing for details. Nikon Microscope Objective LU Plan, ELWD 20x/0.40 A, ∞/0 WD/BD. Condition: Used, Made in Japan. Listed at 350.00 USD. The Nikon Microscope Objective LU Plan, ELWD 20x/0.40 A, ∞/0 WD is a high-quality microscope attachment designed for precise and detailed examination of samples. Made by the reputable brand Nikon in Japan, this unit offers a magnification of 20x, making it ideal for a variety of medical and laboratory applications. With a wide field of view and a high level of optical clarity, this microscope objective ensures accurate and reliable results in a professional setting. In excellent optical and cosmetic quality , as pictured. Magnification: 20x Numerical Aperture (NA): 0.40 Working Distance: Extra Long Working Distance (ELWD) of 11mm to 13mm Features: Designed for Brightfield (BD) and Darkfield applications, and is infinity corrected