Daniel_

Engineer?

Now it all makes sense.

I'm a chemist, with a masters in Thermodynamics - in my (long distant) research days, I was measuring things in parts per billion levels of reproducibility. For me, even the 180 degrees you use are not fine enough, so if you're really wanting to measure things properly, you need Lord Kelvin's scale (and 6 or 7 significant figures MINIMUM).

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Overhead, the Albatross hangs motionless upon the air,
And deep beneath the rolling waves,
In labyrinths of Coral Caves,
The Echo of a distant time
Comes willowing across the sand;
And everthing is Green and Submarine
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