In our opinion, the OM139 offers some of the best value in the Omano range. It is one of the highest quality Omano compound microscopes. Superior features include infinity corrected optics, four plan objective lenses, Kohler illumination and SWF 30mm eyepieces - yet priced under $1,000. The OM139 includes a Seindentopf microscope head inclined at a more comfortable 30 degrees with a pair of 30mm super wide field SWF 10x eyepieces for a far better viewing experience. Interpupillary adjustment range of 55-75mm is standard with a diopter on the left ocular for individual eye focusing. The trinocular head is rotatable through 360 degrees for flexible viewing positions. The microscope is powered by higher quality infinity corrected optics and four plan objective lenses (4x, 10x, 40x spring, 100x spring, oil immersion) for superior performance. The objective lenses are set in a rear-facing, click stop nose piece which provides more space for accessing and changing out slides. Also includes a professional Abbe 1.25 N. A condenser with iris diaphragm and filter for optimal adjustments. Kohler illumination includes LED with variable intensity. Accessories include eyecups, Dust Cover, Manual, Spare Bulb, Spare Fuse, Blue filter, Immersion Oil. Omano is a registered trademark of The Microscope Store, LLC. All rights reserved.