National Optical 167 Advanced Series Binocular Compound Microscope (167, 168, 169)

National Optical 167 Advanced Series Binocular Compound Microscope (167, 168, 169). Superior in design and performance, National Optical's 167 Series incorporates a wide range of features designed for university and laboratory use. Superb optical clarity and reliable mechanical engineering assure years of top performance. Choose from four grades of objective lenses - semi-plan, super high contrast, plan, and plan phase. All objectives are parfocalled, parcentered, and color-coded. All models have WF10X Eyepieces, 1.25 Abbe Condenser, LED illumination, and mechanical stages.  Trinocular versions include video C-mount adapter (930-005). OPTICAL SYSTEM Widefield 10x /18mm eyepiece 45° inclined monocular viewing head rotates 360° for easy sharing by more than one student DIN standard 4x (0.10 N.A.), 10x (0.25 N.A.), 40xR (0.65 N.A.) and 100xR oil immersion (1.25 N.A.) semi-plan objectives. All are parfocalled, parcentered and color-coded Quad objective turret is ball-bearing mounted for s