Optivisor Optical Glass Lens Plates Only Soldering & Torches It is not compatible with

It is not compatible with current Foredom flex shaft systems

Designed by Michael Good with Bill & Jordan Fretz

25mm / 30 gauge (Hole #31) Material Hardened steel Origin Italy Compatible Metals Gold

Intuitive operation — place the bracelet on the gauge and read the size

Optivisor Optical Glass Lens Plates Only Soldering & Torches It is not compatible withDonegan Optivisor optical glass lens plates are available separately and can be switched in moments. Simply press out the black keepers with a coin or similar tool, swap the lens, and press the keepers back in. Earlier models used small nuts and bolts for lens retention. Donegan is the only head mounted magnifier available with optical glass prismatic lenses. These lenses cost more but deliver superior clarity and longevity compared to the lesser lens