Folding magnifier on keyring, 5X27

Summary Just the right size to fit on a keyring (lens is 27mm diameter*); just the right magnification (5X) for 'general use'.  * the manufacturers say the lens is 27mm diameter, according to our ruler it's 23mm Branded 'Quicktest' 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. 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.