Our professional binocular microscope incorporates all the best features of a qualitylaboratory instrument. The objectives face backwards for more space and thebase has a comfortable plastic over the metal for less heat conduction. The fielddiaphragm adjustment built into the illuminator offers Kohler's illuminationmore lighting control options.Features:1) 45?inclined binocular Seidentopf head, rotatable 360?) Interpupillary distance adjustment 55-75mm3) Pair of 10X WideField eyepieces4) DIN Achromatic objectives: 4X (NA .10), 10X (NA 0.25), 40XR (NA 0.65), 100XR oil (NA 1.25)5) Magnification from 40X to 1000X6) Focusing stop to prevent objectives and slides from damage7) 140mm x 135mm graduated mechanical stage (range of travel 45 x 80mm) with coaxial drive and comfortable low knob position8) Spring loaded slide holder9) Abbe Condenser N.A. 1.25 with rack and pinion adjustment10) Iris diaphragm with blue filter11) Coaxial coarse and fine focusing tension controls12) Variable intensity halogen illuminator, 6V 20WContents:1) Instruction manual2) Replacement bulb (MA07) and fuse3) Immersion oilSpecifications:1) Size: 7" x 9" x 15"2) N.W.: 13 3/4 lbs3) Shipping weight: 18 lbsOptional upgrade(s):1) Plan achromatic objectives set2) Phase contrast set3) Dark field condenserMRP-3000T is trinocular version of MRP-3000, offering a third vertical eyetube suitablefor a camera attachment (available separately). MRP-3000 can also be orderedas Dual View Microscope (MRP-3000D), ideal for one-on-one teaching. MRP-5000 has same popular features of MRp-3000 but with 5 DIN Achromatic objectives. MRP-5000 also has trinocular version (MRP-5000T) and Dual View Microscope (MRP-5000D). producing area:China