A Jewelers Eye Loupe, Triplet 20x-18mm Pocket Magnifying Glass With Case is a compact, high-precision optical tool used to inspect tiny details on gemstones, jewelry, watches, coins, and stamps.
Triplet Lens Design: It uses three individual optical glass lenses bonded together to eliminate color fringing (chromatic aberration) and edge distortion, giving a sharp, flat image.
20x Magnification: Provides strong close-up zooming power (though with a smaller field of view and shorter working distance compared to standard 10x loupes).
18mm Lens Diameter: A standard optical size that balances portability with a usable viewing area.
Pocket-Sized & Foldable: The glass lens swings out for use and folds safely inside a protective metal swivel case when stored.