This is an old revision of this page, as edited by Tarquin(talk | contribs) at 10:48, 2 January 2003(a stub. needs to explain why these scales are useful). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.Revision as of 10:48, 2 January 2003 by Tarquin(talk | contribs)(a stub. needs to explain why these scales are useful)
