Refractometer

[Kshupe]

Does anyone know of a good refractometer and where I could find one online? A link would be awesome. I tried to search earlier and there are too many to choose from, I was confused

 

[ccCapt]

Refractometer for reading salinity w/ Free Calibration fluid - English

 

[carey]

I have this one, no calibration fluid though.

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices

 

[xxStLxx]

I have a vertex one, it came with the calibration fluid and the mini screw to adjust it. It cost 40 bucks at my LFS