Refractometer is the most useful brewing tool?

[matteroftaste]

the most useful brewing tool i have is my pint glass.

 

[BadNewsBrewery]

When did everybody run out of energy to post their point, but they still have enough energy to post that they have no energy? I'm sure Al Gore has something to do with it...

 

[aubiecat]

I have one of those cheap refractometers, I supposed I am just lucky because mine has been accurate with my hydrometer from day one.