You know folks,

No offence intended, but it never ceases to amaze me the ignorance of
humanity!

I am aware of the arguement about temperature, because temperature
expands a liquid - but so does low atmospherice pressure,as does lower
gravitational force.

If you lower the atmoshperic temperature then a liquid will boil at a
lower temperature, hence its viscosity is increased at lower
barometric pressures. As does a liquid subject to lowered
gravitational force. It's simple physics! If one choses to ignore the
environment then let it be, but the scientist must consider all
factors, mustn't they?

Lets say that you are breathalized by a police officer and the legal
limit is 0.05% alcohol volume. Now lets consider if the atmospheric
pressure is abnormally low and the ambient temperature is relatively
high. Shouldn't it stand to reason that your REAL blood alcohol
reading be lower than actual at the time of reading? Should we just
simply accept the fact that the reading of 0.05 is acurate and we are
in the wrong if the reading is 0.051? NO! Not at all - there are other
differential factors working at hand, even though we may not be not
aware of them.

Then the same reasoning should apply to our Hydrometer readings
because there may be other influences working at hand that we are not
sure of.

The gravitational forces of the moon DO NOT work equivalent to the
Hydrometer reading because gravitational force is relative to weight
and distance. This is simple grade 8 science. So the weight of your
Hydrometer is far less significant than the weight of the liquid being
measured for Specific Gravity, isn't it?

This means that the liquid that one is measuring is being PULLED much
more than the Hydrometer that we are measuring with, isn't it? The
question remains, what is the significant difference of measurement?
The same question applies to atmospheric pressure, doesn't it? The
real question is, as to what degree or percentage is the actual
difference?

This question is not requested for speculation, but for actual
scientific reasoning, evidence, and calculation. Does anyone have a
scientific answer?

Cheers,
Steve!