UCIS Infinity Independent Achromatic Optical System · WF10x plan eyepieces, 18mm field of view, high eye point up to 21mm · Seidentopf trinocular viewing head, inclined 30º, rotatable 360º · 52-75mm interpupillary distance settings · ±5 Diopter adjustment · Quadruple nosepiece inward facing with positive click stops · Infinity Achromatic 4x, 10x, 40x(S) and 100x (S/Oil) objectives · Right hand controls, low position, mechanical stage, 142mm x 135mm, movement range 76mm x 52mm · N.A. 1.25 Abbe condenser with iris diaphragm, with phase-contrast/dark-field socket · Coaxial coarse and fine focus mechanism with markings. Fine focus sensitivity 0.001mm · 1X C-Mount · 6 volt 20 watt halogen illumination, 110-240V wide voltage · Dust cover, clear blue filter, power cord, immersion oil