Ideal for Geology, Petrology, Mineralogy, Pharmaceuticals Etc Conscopic & Orthoscopic Observations Trinocular Dedicated Camera Port Digital Camera Interface to view & record Live Images & Video Measuring software for 2 Dimensional Linear (WINDOWS ONLY!!) Anti Fungus, Anti Reflection & Hard Coating on all Optical Components Magnification Levels 40x, 60x, 100x, 150x, 400x& 600x Eyepiece for Centering & Linear Scale Sliding Bertrand Lens w Centering Rotating Analyzer Swing Out Polarizer Circular Rotating Stage w Centering Screws Separate Coarse & Fine Focusing Knobs on Rack & Pinion Gypsum & Mica Plates (Full and 1/4th Order) Best Price to performance Ratio Switchable between Brightfield & polarizing