Accu-scope Microscope 40xR NIS Plan achromat objective, N.A. 0.65, W.D. 0.70mm

Specifications 40xR NIS Plan Achromat objective N.A. 0.65 Working distance 0.70mm Provides a flat field of view Infinity corrected Corrected for No. 1 ½ coverglass Spring-loaded bottom lens to prevent damage to the objective and the specimen M25 threads Designed for EXC-500 series microscopes Compatible with Nikon E200, E400, E600, Ci, 50/55i Shipping size 9x7x5 inches Shipping weight 1lb This microscope objective is compatible with Nikon E200, E400, E600, CI, 50i/55i and 80i microscopes.  Although it will not be 100% parfocal