Metric/inch conversion 1 cm = 0.39 in; 1 in = 2.54 cm Fits lens diameters: 34–37 mm (approximately 1.34–1.46 in) Compatibility and function Designed for use with microscope or binocular lenses with a diameter of about 34–37 mm. Enables correct matching between lens/eyepiece and compatible accessories so you can use the right components without guesswork. Key benefits — why you need this Eliminates uncertainty about lens size compatibility when selecting eyepieces or addon accessories. Saves time and reduces returns by ensuring you parts that fit your microscope or binoculars. Works with commonly sized eyepieces found in educational, hobbyist, and field instruments. Important attributes Size: stated fitting range 34–37 mm (approx. 1.34–1.46 in). Compatibility: intended for microscope and binocular lenses in that diameter range. Performance: sized to match standard eyepiece diameters so accessories and components align correctly. Material and finish: see product listing for specific material details. Accessories available We also offer a comprehensive selection of microscopy accessories to enhance your workflow. From objectives to slide preparation kits, available options help you get the most from your microscope and related optics. Practical applications (use scenarios) 1. Classroom lab: Confirm compatible eyepieces and matching objectives and slide kits for student microscopes that use 34–37 mm eyepieces. 2. Field observation: Fit accessories to portable microscopes or binoculars in the 34–37 mm range to expand capabilities without equipment changes. 3. Hobbyist microscopy: Match replacement eyepieces or addon tools to a hobby microscope to improve sample viewing and slide preparation. For exact material and additional compatibility details, refer to the full product specifications in the listing.