I'm with you RAH. We always measured discs in feet, and moldboard plows by the bottoms.
Then again, I'm not accustomed to calling a Bluegill a perch, either. ...........to each his own!
"Forget pounds and ounces, I'm figuring displacement!"
If we accept that: MBG(+)FGSF(=)HBG(F1) And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1) Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT? PB answer: It depends.