BelOMO 20x Quadruplet Loupe Folding Magnifier
This loupe is an extremely high quality, achromatic, magnifying lens manufactured by BelOMO. The BelOMO loupe's large triplet lens provides a sharp, bright, clear and undistorted view as found in loupe magnifiers at many times the cost.The BelOMO 20x 17.5mm (0.50'') Quadruplet Loupe Magnifier has a viewing area of 0.28" (7mm). The 4 elements making up this quadruplet provide a bright, and clear view. The 20x power magnification provides the strongest magnification recommended in a hand held magnifier. While a 20x power magnifier provides lots of magnification you'll find depth of field (that amount of vertical relief that appears in focus) small. The housing and cover are coated with a matte black finish and assembled using flat head screws. The high quality optical lens of each loupe is tested and certified, just like a camera lens.Features:* Magnification: 20X* Optical Quadruplet Lens* Focal distance, inch: 1.1 ; mm: 28* Linear field of view, inch: 0.67 ; mm: 17* Overall dimensions, inch: 1.54 x 1.1 x 0.98 ; mm: 36 x 28 x 25* Weight, ounce: 2.1 ; kg: 0.06    Model: 131020