Product Overview The Meiji Techno MA519 is a 10X super-widefield focusing eyepiece with a 21.0 field number, designed for compatible EMZ, EMT and EMF stereo microscopes. Its focusing adjustment and 25 mm reticle mount make it useful for microscope inspection and measurement setups. Key Features Meiji MA519 10X focusing eyepiece Super-widefield design with field number 21.0 30.5 mm outside diameter Accepts a compatible 25 mm reticle (sold separately unless stated) Sold individually — one eyepiece, not a pair Technical Specifications Manufacturer Meiji Techno Part number MA519 Magnification 10X Field number 21.0 Eyepiece outer diameter 30.5 mm Reticle mount 25 mm Quantity One eyepiece (single) Compatibility Compatible standard-eyepoint Meiji EMZ, EMT and EMF models; not high-eyepoint models Recommended Applications Microscope measurement, reticle-based inspection, electronics inspection, quality assurance and laboratory observation. For binocular or stereo viewing, ensure that both eyepieces have matching magnification and appropriate compatibility. Compatibility and Ordering This product is sold as one MA519 focusing eyepiece. Meiji's official catalog lists the MA519 as an individual item, although some descriptive manufacturer text refers to a pair. Confirm whether an additional matching eyepiece is needed for your microscope setup. Manufacturer Resources Official Meiji MA519 product details and Meiji EM Series accessory catalog (PDF) . Related Products and Expert Support Browse Meiji eyepieces and Meiji EMZ microscopes . Microscope Marketplace can help verify eyetube compatibility and reticle fit.