We’ve acquired an old German barometer, and today tried taking hourly readings. Air pressure appears to have dropped slightly since the first reading this morning, which would indicate the approach of a low pressure system, perhaps some light rain. Indeed around lunchtime we did get a bit of a sprinkle.. No movement since then.
In the afternoon we also made a simple balloon + glass barometer. It seems fairly stable at the moment. (Note: meat grinder is non-essential, just provided a handy ledge).*
*Postscript: 2 hours later and unless I am mistaken my straw has swung a couple of notches up! There has been no change to the hand on the ‘proper’ aneroid barometer since this morning and I am growing a little suspicious of its abilities..