I'll sort by
systems (
Metric,
Imperial, etc.), subsorted by
type weight,
volume, etc.).
The Metric System
Imperial Sys*
...
Misc.
Metric system of spiff
Fathom
Richter Scale
IQ
(And so on, for parsec after lightyear and moron after creetin. Oy!)
More later...I gotta submetanode this.
See also: Nodes about math #1