National 167 Series Compound Microscopes, Monocular

National 167 Series Compound Microscopes, Binocular. 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. SPECIFICATIONS: OPTICAL SYSTEMWidefield 10x /18mm eyepiece45° inclined monocular viewing head rotates 360° for easy sharing by more than one studentDIN 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-codedQuad objective turret is ball-bearing mounted for smooth, precise positioning of objectives, features textured rubber knurling for easy grip. Mounted in reverse position to facilitate ease in changing slidesILLUMINATION3W LED va