20X21 triplet loupe

Summary 20X21 The 'standard' magnification for a loupe (for jewellery & gemstones, stamps & coins) is 10X. This one is 20X The diameter of the lens is 21mm* * useable diameter of this lens (allowing for the rim that holds the lens in place) 19mm Too see reviews of loupes, click here Detail This really is the largest high-quality 20X loupe. Though even with this high-quality triplet, they are at the limit of what can be done technically - although the image is crystal sharp in the centre, it is just a bit wobbly around the edges. Incidentally, I did once sell a genuine large 20X for half this price, but the quality was so awful I got fed up with people returning them and I discontinued them. Technical Magnification / lens size in mm: 20X21 Lens material: glass Lens type: Triplet (one magnifier made of three lenses on top of each other) Type: jewellers' loupe (small, pocket-size, folds into its metal casing) Origin / brand: we import these from China Casing: metal Finish: chrome Presentation / extras: soft leather case and plain cardboard box     Further information Everything you need to know about magnifiers and magnification. See information about (and reviews of) loupes (small high-power folding jewellers' magnifiers). See information about (and reviews of) binocular (head-worn) magnifiers- especially the surgeons-type. See a guide to magnifiers for the partially-sighted. See loupes with UV lights. Video (electronic) magnifiers, video magnifiers compared. Products: see pocket microscopes and phone microscopes, click here. With most magnifiers* magnification and working distance are related. Download our Excel sheet, enter a magnification to see the resulting working distance, enter a working distance to see the resulting magnification. * excluding surgeons-type, digital & phone magnifiers, and microscopes.