The Lithco Lithomag Folding Magnifying Loupes are the best general-purpose magnifiers for use in all areas of graphic arts production from pre-press to press. The Magnifying Loupes features an achromatic lens system that can be focused for individual eyesight. The magnifying lens has a fully color corrected lens that folds into a sturdy base which acts as a carrying case. The lock-ring on the lens maintains focus, so you don't have to make readjustments. All magnifications include a protective pouch. Choose from different magnifications including 12x and 20x magnification. The 12x Magnifying Loupe features an extra-wide field of view lens.