On 21 Jan 2014 at 10:15, Jim Adney wrote: > 6" (of mercury, Hgk you can see that on the dial scale) An extra "k" sneaked in there somehow. It should read: 6" (of mercury, Hg, you can see that on the dial scale) -- ******************************* Jim Adney, jadney at vwtype3.org Madison, Wisconsin, USA *******************************