This item is free to ship to the continental United States.
The Gem-A Refractometer provides clear and concise readings despite it's compact size.
This Gem-A Refractometer has high-quality optics and a thread eyepiece for clear focusing and readings. Comes with a polarizing filter, built-in monochromatic filter and fitted case. Required external light source sold separately (GM2). Made of an all-metal construction. One-year warranty.