I agree with that. But have you ever seen them switch units at the zero point on a gauge before? Switching from psi on the + side to in Hg on the - side on a single scale is what is strange (to me). Maybe I led a sheltered life.
--- On Fri, 7/10/09, James R. Frysinger <[email protected]> wrote: From: James R. Frysinger <[email protected]> Subject: [USMA:45341] Re: Vacuum display To: "U.S. Metric Association" <[email protected]> Date: Friday, July 10, 2009, 2:58 PM No set of units has ever, to my knowledge, been constrained to use only above or below atmospheric pressure. Jim Frysinger
