A ><< his no-darn-good plum line >> > > > > The word should be plumb as in Plumbing, not plum as Pudding, as Alan Ballow rightly points out. Can I ask, if one uses the expression plum(b) right , or plum(b) wrong, which one is correct? Just Plum(b) don't know, Eric > > Eric Alan Weinstein University of London E.A.Weinstein at qmw.ac.uk