Hi there, you made a very specific statement saying that if a barometer has a round dial with a needle it will be an aneroid barometer, unfortunately that's not necessarily true. There are some mercurial barometers that have a brass float that rides on the mercury, the float is connected to a pointer by a thread. The mercury tube is hidden behind the dial, if you see such a barometer in a junk shop, buy it, if you see it in an antique shop you may not want to pay the asking price. .. Andy
Hi there, you made a very specific statement saying that if a barometer has a round dial with a needle it will be an aneroid barometer, unfortunately that's not necessarily true. There are some mercurial barometers that have a brass float that rides on the mercury, the float is connected to a pointer by a thread. The mercury tube is hidden behind the dial, if you see such a barometer in a junk shop, buy it, if you see it in an antique shop you may not want to pay the asking price. .. Andy
AndyDaviesByTheSea 8 months ago
Hey you are really smart! Thank you.
I am doing a science project about this you
were a awesome help.
harrynh1952 10 months ago
so barometric pressure is absolute pressure?
marek0086 1 year ago
thanku....
luvwidkhushi 1 year ago
thank u. im in aviation and its been a hastle lately understanding barometric pressure!
xovux 2 years ago