FYI I have read many times on here folks saying dont measure FG with a refractometer, the alcohol messes with the reading. They are great and easy for OG reading/checking for gravity during mash/sparge. Get yourself a hydrometer for your FG reading if you dont have one yet.
We do have one, however, the graduated cylinder cracked (it was that cheap plastic that it came in...) I priced out a new one and it was almost the same amount of a refractometer, so I bought that. I appreciate the heads up, I had not read that yet.