[werk_ag]

But you aren't measuring quantities of water (liters, gallons, whatever)*--you have no way of telling how many liters of rain have fallen, because you don't know that the rain rate is constant over any particular area. I'm in the US, of course, and I'm not at all going to get dogmatic about how units are expressed outside the US, but the "/m^2" just seems like a meaningless qualifier. In the US, rain is measured in inches, without any area denominator.

* Strictly speaking, you're measuring the quantity of water that passes through your rain gauge unit, but that's of interest only as a means of determining mm or inches of rain.

Of course we are measuring quantities of water.
I think you don't fully understand the purpose of a rain gauge.
If a value of 10mm or 10 inch of rain, canot be related to an area, it means nothing.


Rain gauge is an meteorological instrument for determing the depth of precipitation (usually in mm) that occurs over a unit area (usually one metre squared) and thus measuring rainfall amount. One millimetre of measured precipitation is the equivalent of one litre of rainfall per metre squared.

Source: http://www.weatheronline.co.uk/reports/w...-gauge.htm

1mm rain means that every square meter covered with water with the height of 1mm. One meter is 1000mm, so the total volume is 1000 x 1000 x 1 = 10^6 cubic mm or 10^3 cubic cm or 1 cubic dm, which is one liter. So for every mm of rain you get one liter per square meter.

Reference: https://www.physicsforums.com/threads/me...nt.516145/

I'm not the best qualified person to continue to discuss this matter, if you need or want more info, google about it, you will find lots of information about it.

Does that mean there isn't any way to configure these at present? That's a little surprising, though it would certainly explain why I couldn't find it...

Why are you so surprised?

Just because some of the units displayed on the display of the RX unit, are following the metric system, which as also adopted in the US, despite in practice, it's only fully used in the military and academic environments.

If you can't find a particular option in RX_config.h, it means it's not available.

It's important to say, that we are only talking about the units shown on the RX display, with Cumulus or any other software you can use any units you wish.
Anyway, I noted your suggestions, and as I already said some will be implemented in future releases of the software, others will not.