I've googled until I can google no more. Actually, I used duckduckgo, but duckduckgoed isn't a real dictionary word yet.
So here's a question for the STW hive mind - will an old-school barometer (not electronic) likely survive being sent by air courier? Apparently pressurised plane cabins can be as low as 700Hpa, which is well off the bottom of the scale for a domestic barometer. And this assumes that the hold of a cargo plane is pressurised.
I've put bottles of wine in my luggage and they've all survived long haul flights without the cork coming out.
Just recently I have been sent a barometer by air courier and 'tis buggered - wondering if the flight pressure is to blame.