The only thing that matters is that the packet yielded by the driver use a consistent unit system. Doesn't matter what that unit system is, but all measurements in the packet have to use it.
See the Appendix *Units <file:///home/tkeffer/git/weewx/docs/customizing.htm#units>* for the definitions of the three unit systems, US, METRIC, and METRICWX. -tk On Sat, Apr 1, 2017 at 2:01 PM, Craig Thom <craigt...@gmail.com> wrote: > Thanks. In the MySQL database it's a double, so the resolution is there. > > My weewx is using American measures and putting inHg in the database. Do i > need to convert from Pascals before handing the data back?