Outside diameter of approx. 30 mm. They fit most common size stereo microscopes.
These are a pair of brand new 20X wide field microscope eyepieces. They are Achromatic (International DIN/JIS) standard size
Model Number EP20X305; Give your microscope a boost with greater power & clarity at a fraction of the cost
Professional and practical design with beautiful appearance, easy to carry and use.
Usually used in laboratories, schools, teachers, sample observation, eyepiece protection, etc.