45mm Focal Plane Infinity Long Working Distance Metallographic Microscope Objective Lens Multi-Coated RMS Thread Plan Achromatic Objectives. Connecting thread: international standard interface "4/5 inch 1/36 inch", diameter M20.20.706MM.
The external thread has a diameter of 20.2 mm and a pitch of 0.706 mm. The lens diameter is 200mm, which can replace imported microscope objective, high-definition imaging, long working distance. Of screw thread: Standard RMS (20.2x0.706). Object field of view(mm). Image field of view(mm).