Microscope Rubber Eyepiece Cover Guards — Size M, 2 pieces Overview Soft rubber eyepiece covers designed for stereo microscopes. These eye cups block stray light, provide comfortable contact with the face, and protect both the user and the microscope eyepieces during extended use. Key benefits Improves image clarity by blocking outside light and reducing glare. Soft, flexible rubber cushions the eye and prevents scratching or wear on eyepiece barrels. Helps maintain a consistent eye distance for easier viewing and reduced eye strain. Simple slipon design for quick installation and removal. Supplied as a pair for binocular microscopes. Material and compatibility Material: rubber. Quantity: 2 pieces. Available sizes and fit details: S size: 33 mm diameter (1.3 in), 18 mm height (0.71 in). Suitable for 3235 mm eyepiece lenses. M size: 36 mm diameter (1.42 in), 18 mm height (0.71 in). Suitable for 3437 mm eyepiece lenses. L size: 33 mm diameter (1.3 in), 30.7 mm height (1.21 in). Suitable for 3235 mm eyepiece lenses. Typical applications Laboratory microscopy where controlled lighting and comfort are important for long observation sessions. Educational settings and classrooms to protect eyepieces and help students position their eyes correctly. Industrial inspection and quality control tasks requiring steady, glare viewing. Additional notes Please allow up to 1 mm variation due to manual measurement. Product color may appear different on different displays. The eyepiece guard is designed to protect eyes from outside light and to avoid damage to stereo microscope eyepieces.