Australian scientists are trying to create the world's roundest objects: perfect silicon spheres to define a kilogram:
Scientists will use the spheres to determine how many silicon atoms make up a kilogram, and this will be used as the new definition — bringing the kilogram into line with other base units such as the metre and the second, which are all defined by physical constants.
"It's really an atom-counting exercise … and we'll come up with a new definition of the kilogram based on atoms, rather than based on the thing in Paris," explained Walter Giardini, of Australia's National Measurement Institute.
That thing in Paris is a solid platinum-iridium cylinder kept at the Bureau International des Poids et Mesures (BIPM), which mass is, by definition, exactly 1 kilogram.
International Prototype (Image Credit: BIPM)
As for the kilogram standard... I am in favor of anything that removes this from the custody of the French. There is no telling when they might get invaded again and lose control of the kg prototype, Think what could happen if that were to fall into the hands of the wrong people! Now who is going to invade Australia? The New Zealanders? not likely...
I am pretty sure your military uses the metric system and they are as "good American" as you can get!
counting an exact number of atoms is better.