Kitchen Garden Forum

Can anybody help please. I've bought an outdoor wall clock with temperature and what I assume to be Barometer readings. My problem is if the clock came with any explanatory notes I don't have them.
The dial face of the barometer insert is calibrated by % 0 to 100, what I'm struggling to do is equate it to something, what is the reading a percentage of?
Signed
Baffled from Leicestershire

Is it in fact a humidity meter perchance? For example, http://www.greenfingers.com/superstore/ ... id=LT1341D

yep that looks about right. I understand a barometer I may have to talk nicely
to the purse strings

As an aside when I was young I remember one on the wall at home, I believe it was quite old and was given to my parents as a wedding present. I was fascinated when my father used to tap the glass.
It must have been when I could read because I used to get a stool to stand on and move the needle to sunny.
I got caught and certain do's and don'ts were explained to me, so be aware that altering the needle does not alter the weather
'

I've got one of those taken from the family house. Currently reads 29.08 which I assume are inches of Mercury (not labelled) or on your scale between Rain and Change.
My weather station says 984.9 hpa.
Neither units being what I expect on a weather chart!
1" of Mercury = 33.86 millibars so old device says 984.6 millibars
Apparently 1 hpa (hectopascal) = 1 millibar so my old brass device hanging on the wall agrees with my modern weather station.
Humidity currently 81%.