Cheapo refractometer units

[MichaelTH]

I bought this refractometer from the Walmart marketplace. But I don’t understand its readings. It seems to say that it’s units are %v/v, which I assume means “% alcohol by volume”. That seems like a weird (maybe impossible) unit for refractometer readings, especially since the refractometer is supposed to be used BEFORE fermentation.
Does anyone know if there’s a correction/conversion/workaround, or should I just return this ASAP?

 

[azmark]

Can't see the pic, but, usually you'll want it to read sugars, and show brix. Most for brewing will also show SG.

 

[VikeMan]

You link doesn't work, but if it says " %v/v," that's probably a spirit refractometer, which unfortunately isn't useful for brewing. It's for measuring alcohol content of distilled beverages.