Binocular surgeon's-type magnifier, clips to spectacles Select size: magnification - working distance (WD):3.5X -mag. / 42cm working distance With skill

With skill

see all the stones with the same refractive index

Disclaimer

on the genuine coin you can see the line down the middle of the blade and the shape of the arm

Binocular surgeon's-type magnifier, clips to spectacles Select size: magnification - working distance (WD):3.5X -mag. / 42cm working distance With skillSummary These clip to any spectacles, 2. 5X magnification or 3. 5X magnification. Comments This is the type used by dentists and surgeons, exceptionally high quality. Instead of 'simple' lenses, these lenses are, in effect, two very high quality (tiny) telescopes. which means: a combination of magnification with a long working distance (42cm). Sit (or stand) at a comfortable distance from the object No need to get close (3 or 4 inches with a standard