... 2.Conjugate distance of objective:195mm 0r 185mm Biological Microscope-04 Main Specifications: Achromatic objectives 4x, 10x, 40x, 60x, 100x, 63xs ... : 22mm Fine adjustment range:1.8mm Condenser: Single lens condenser(NA=6.5), disk diaphragm Abbe condenser(NA=1.25), adjustable diaphragm Illumination ...