Vintage Early 1900s J. I also believe this was a promotional gift given out by J. White, an optician based in Glasgow. I do not know who actually manufactured this piece. But experts should be able to tell you based on the insignias on the back. Inner bezel rotates when you turn the crown. Mineral or glass crystal. Case diameter is 48mm. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “rpgtime” and is located in this country: US. This item can be shipped to United States.
- Time Period Manufactured: Pre-1930
