The problem is that doesn't account for the ethanol if it's a finished wine or mead. Sugar makes the hydrometer float higher than pure water, ethanol makes it float lower, so unless you know exactly how much ethanol's in your solution you can't really figure out the sugar that way with any accuracy...
Originally Posted by vulcan500rider
"The main ingredient needed is 'time' followed closely by 'patience'." - The Bishop 2013
"Good grief! If someone wanted to murder you, all they would have to do is ship you a 55 gallon barrel of honey and watch you document working yourself to death!" - Vance G
"When you consider that laziness and procrastination are the fundamentals of great mead, it is a miracle that the mazer cup happens." Medsen Fey, 2014