Take the barometer outside, hold it at arms length and spin around as fast as you can. This centrifugal force will get rid of the pockets in the tube. Of course your neighbors will think that you have lost your mind but trust me this method really works.
Take the barometer outside, hold it at arms length and spin around as fast as you can. This centrifugal force will get rid of the pockets in the tube. Of course your neighbors will think that you have lost your mind but trust me this method really works.
What tool are you using?
only controlled heating was needed