On Thursday, March 5, 2020 at 4:55:51 PM UTC-5, Jon Elson wrote:
On Wed, 04 Mar 2020 12:41:28 -0800, Christopher Tidy wrote:

Hi folks,

Does anyone here have experience of getting the air out of a mercury
barometer column?
The standard procedure is to turn it upside down, use an eyedropper to
fill the bottom of the tube, and poke a wire down the column to knock any
air bubbles loose. Then, the TRICKY part is to get the tube back right-
side-up without allowing the mercury to escape and air to get back in.

It seems impossible to do this without getting your hands in the mercury.

Jon

Is there any legal way to ship small amounts of Mercury? I have about a dozen mercury switches from old wall thermostats.