Antique Brass Brass Deep Sea Thermometer by Negretti and Zambra London. Brass Deep Sea Thermometer by Negretti and Zambra. London England , with one 15 in. Brass-encased glass thermometers calibrated in Celsius, glass tube and brass enclosure marked with maker’s name and origin, securing fixtures, chain and wooden box, lg. 4 1/2 in x 4 1/2 in 18 1/8 in. 100% non magnetic brass construction / as seen has protective silver painting. Researching info I have found below. Note: First invented in 1857 for Admiral Fitzroy, the present day model is employed for taking readings up to 15,000 feet deep and to withstand a pressure of seven tons without damage. The item “Antique Brass Brass Deep Sea Thermometer by Negretti and Zambra London England” is in sale since Sunday, January 17, 2021. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “scissors923_2″ and is located in Peoria, Illinois. This item can be shipped to United States.
- Time Period Manufactured: Pre-1930
- Original/Reproduction: Original
- Maker: Negretti and Zambra
