The SI unit for mass, the kilogram, already has a prefix in its name and can have no other SI prefix. To use prefixes with a unit for mass, the rule is to remove the "kilo" prefix and add the new prefix to "gram" (unit symbol g), as in milligram and its abbreviation mg. ...
A group got together and came up with a dozen prefixes to be added to the PNs, which indicated the stage of the manufacturing process. This process worked well while the original creators remained at the company. Now, fast forward a couple of years: new team members have joined, and ...