Check the listing for details. National Optical Model 185 Microscope. Condition: Used, Made in United States. Listed at 20.00 USD. The National Optical Model 185 Microscope is a compound microscope with a magnification range of 20x, designed for use in a biological laboratory. It features an upright microscope structure and a monocular viewer, making it ideal for detailed observation and analysis of various biological specimens. The National brand ensures quality and reliability in this essential lab equipment for medical and research purposes. This microscope is a valuable tool for healthcare professionals and researchers looking for precision and clarity in their work. These items are removed from surplus so they will see common wear and may be in surplus condition. These items function, please clean thoroughly before use to avoid issues with viewing.