Originally Posted by AVLbrewing
Reminds me of a saying I once heard: "A man with one watch knows what time it is, a man with two is never quite sure."
I guess other than doing some two point calibration or buying a third and hoping there is agreement between two of them I'm not sure what else you could do.... Maybe buy a refractometer?
Ha! So true...the refractometer is on my list. I brewed tonight and I had better results doing a few different tricks. 1st, I re-crushed my grain using a bowl and mallet...just to be extra sure. Then I added my full sparge to my mash out to hopefully thin the sugars a little. Also cut nearly 1/2 gal out of calculation just to be sure I wouldn't pull too much water (also added a little over 1qt to cool my mash before starting timer).
Old hydrometer read 1.040 and new read 1.044. Temp correction (@77*) gives me a 1.046 and only -7pts from my expected OG of 1.053. Brewhouse efficiency today rose by 10%, up to an 85%. Not to shabby