It's actually made of glass, I think it's called a Galileo thermometer, it has these glass capsules inside with colored liquids of different densities, each one has a small brass tag on the bottom with a temperature embossed on it, as the temperature rises the density of the liquid makes them sink one by one, the lowest floating ball shows the temperature. I found one while cleaning out my dad's stuff. My son kept it.
You are spot on Moon Goddess. I thought because of my camera I would be here for days, but not you lot. A very well done to you Moon Goddess. I bet Erich has got one of these too.
Your never a sore loser. Thanks for the video, I was in stitches, with it. We have such great people on this game too.
Glass filled with ethanol and is called a Galileo thermometer. This day and age, they might well be now. Health and Safety and all that.
You are so right and. Your explanation is from your thesis from your Engineering Masters at MIT. And is better than mine. Love it.