There are a minimum of six governing bodies in pro and amateur boxing. They all have varying weight classes and are too numerous to mention. See the attached link,
http://www.answers.com/topic/boxing-weight-classes
The average weight of a feather is - .00125 pounds.
None. A millimetre is a measure of length; weight would be measured in millinewtons.
one step below a light weight Immeasurable with any home scales.
The average weight of a feather is - .00125 pounds.
The answer depends on the bird and also what type of feather.
About 5 miligram
an average feather weighs about .4677790. --.4677790 what? Needs a unit of measurement!
oovER 9000 KG
Between six and seven pounds.
You can't even properly ask a question. It depends on the size of the feather and 100's of other variables involved.
You can weigh any weight
220 pounds he mentions it in his song "the fighter".