Universal? or Multiple Units of Measure?

Lobos
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Firstly, I'd be happy to be corrected if I'm not using the right wording or just plain incorrect with my approach.

Is it practical to suggest that units of one measurement system could possibly represent the measurement of things not only at the macro level, but represent particles with and without mass? Or is it best to create multiple units of measure to prevent inaccuracies/misrepresentation?

In short, what would be better, a universal unit of measure or a bunch of different units of measure?
 
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Well, the physics world at general like to have a small set of internally consistent units. The agreed-upon system is called the International System of Units (abbreviated SI). See http://en.wikipedia.org/wiki/International_System_of_Units
260px-SI_base_unit.svg.png

The seven basic units
 
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Svein said:
Well, the physics world at general like to have a small set of internally consistent units. The agreed-upon system is called the International System of Units (abbreviated SI). See http://en.wikipedia.org/wiki/International_System_of_Units
260px-SI_base_unit.svg.png

The seven basic units

Thank you so much. This helps a lot.
 

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