BelOMO 20x Quadruplet Magnifier with Attached BelOMO Logo Lanyard, High-Quality Optical Glass with Anti-Reflection Coating for a Bright, Clear and Color Correct View

EXTREME Magnification for a handheld magnifier. Use only for very tiny objects, knife blade edges, razor blades,phonographic needles, micro-crystals and where extreme magnification is needed. All 20x loupes have a very shallow depth of field and a small view area making not practical for inspecting diamonds and gems. This loupe includes a BelOMO logo lanyard. The lanyard is installed for you as installing the lanyard requires removing a screw, sliding the nylon of the end of the lanyard over the shaft, and replacing the screw. The lanyard has a quick release buckle so you can remove the majority of the lanyard if you just want to carry the loupe in your pocket or purse. 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