On 16.02.19 11:47, Andy Pugh wrote: > > > > On 16 Feb 2019, at 09:21, Erik Christiansen <dva...@internode.on.net> wrote: > > > > as lb/in^2 isn't right > > It can be, if you measure oil consumption in slugs.
True ... but then a slug is lbf s^2 / ft, and I have enough trouble with those venerable units without resorting to the wriggly ones. > We use hPa a lot at work. It annoys me. > In fact the same software in various places uses hPa, kPa, MPa, bar, psi and > inches of mercury! But we freely use ohm, kilohm, and megohm to avoid superfluous zeroes. Similarly, 1 hPa is immediately recognisable as 1 millibar, given that a bar is 1e5 Pa. None of hPa, kPa, MPa, bar do anything other than move the decimal point, providing notational shorthand. I will admit that Aussies are slow to adopt the cm, using only mm and meter, so a door is 2040 mm, not just 204 cm. Give it another generation, perhaps. I am though old enough that my tire inflation is gauged in psi. But the design of the concrete slab for my off-grid build is specified in MPa. That makes life easy as I know my machine masses in kg and their base areas in m². The only unit which annoys me is the basispoint, used in finance to shift the decimal point two digits ... er, like hPa. Erik _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
