Additional Details ------------------------------ Product description: The View Through The Magnifying Lens Should Be Crystal Clear With No Internal Reflections. Highlights Should Be Sharp And Brilliant, With No Colored Fringes. The Lens Should Be Achromatic. A Flat Object Should Not Look Buckled Or Warped. Ideal For Reading, Crossword Puzzle Game, Close Observation For Items Like Jewelry, Hallmarks, Stamps, Coins, Rocks, Gem Collection And Insects, And Great To Timepieces Repair And Miniature Engraving