Vision Scientific VME0007B-100-LD Binocular Compound Microscope, 10x WF Eyepieces, 40x&mdash;1000x Magnification, LED Illumination, Coaxial Coarse & Fine Focus, 1.25 N.A. Abbe Condenser 30 inclined binocular head that rotates 360. One eye tube is equipped with a diopter adjustment to compensate for eye strength difference when needed LED illumination with intensity control, guarantees a clear and crisp, cool-to-touch white light that lasts up to 60x longer than traditional tungsten bulbs. Eyepiece with a built-in pointer ensures that definite points on the slide can be easily designated and quickly identified Quadruple nosepiece (ball bearing type) with four DIN achromatic objectives are parfocaled, parcentered, and color-coded, providing color-corrected, magnified images Built-in mechanical stage is low-profile and ball-bearing, ensuring easy mobility and precise control of specimen under observation. Slip-clutch focusing system protects gears from damage Ideal for microscopy instruction at middle school and high school levels