STUDENT'S MICROSCOPE, MODEL AI-9 Used for Laboratories Monocular Body of Pressure Die Casting Parts. Mechanical Tube Length 160mm. Coarse and Fine Motion by rack and pinion. Features: Fixed Square Stage 120 × 120mm Without Mechanical Stage (Optional) Abbe's Condenser N.A. 1.25 movable with rack pinion. Replaceable with sub stage microscope lamp. Powder coated paint. Styrofoam packing with dust cover and operating manual. Optional Combination Achromatic Objectives : 10×, 40/45× (SL) and 100× Oil immersion(SL) Optional. Eyepieces : 4/5× or 15× and 10×(Huygenion) Magnification : 25× to 1500×