Actual implementation for us is also SSH'ing to a *NIX box, then tipping over to the PortMaster.

At $WORK we have used Livingston PortMasters to deal with our serial console issues. Network connected and logins can be setup to only have access to certain ports. Have worked well for us. Usually found pretty cheap on eBay.

Personal weight is most commonly reported in Stone.
Auto speed is reported in Miles Per Hour, yet I don't know if travel distance is measured in Kilometers or Miles.
Is gas/petrol/benzine dispensed in Gallons or Liters?

In grade school for me (late 70s) we were taught that soon the US would be switching to metric, so this was VERY important for us to know.

Then in Jr. High, metric was used for the sciences, taught as something everyone was using and we would someday switch to metric all around.

Sr. High, metric was used only for sciences, taught as being best to do things the way everyone else was.

I'm curious about England and metric/imperial/whatever... It's so common to hear Brits talk about weight in Stone and distance in Miles. Do they use Fahrenheit or Celsius for temp? Gallons or Liters for gasoline/benzine/petrol?

Problem with metric temperature is the scale is too big. For every 1 degree of tempC you have almost 2 (9/5) degree of tempF. How many times have you at home bumped up (or down) the temp by 1 degree to feel comfortable? In metric you'd have to get use to half degrees, which is a measure I have yet to see on a digital home thermostat.