I think the article could be changed, so that dimension units like square metre, cubic metre or centimeter⁴ (Used within mechanical engeneering for finding point of gravity, through moment of inertia tables - in objects with constant density.) and m/s for speed differs from f.i. Pascal, Ohm, Newton etc. The difference is that cm² or m/s are obvious, if You just know the seven basic units. This isn't true concidering Volt, Columub, Lux or Watt. So there are 1. the seven basic units, 2. units that entirelly are build up on the seven basic units (including prexixes) and 3. fully derived units with names of their own. It's well explained here, I think http://physics.nist.gov/cuu/Units/units.html Boeing720 (talk) 00:19, 31 January 2014 (UTC)

FYI. All the derived units mentioned above should be in lower case, e.g., pascal, newton, ohm, hertz, etc. since they are units of measure and not family names. Dger (talk) 00:02, 1 February 2014 (UTC)