Olympus 2x RMS Infinite Semi-Apochromatic objective lens low power

  

This is a brand new microscope objective. Semi-APO, PLAN FL N, Tube Length=180mm, RMS Thread, FN 22, NA0.07, WD=0.50mm. No cover glass slip design, 100% perfectly match for Olympus and other olympus standard (Tube Length=180mm) Metallurgical microscope. If it is used in Biological microscope, due to biological 0.17mm cover glass reason, there may be a little parfocus issue(user need rotate 3-4 on coarse), however, due to the Semi-APO design, the optical quality is great.