Green Mercury Barometer

Nicolas Fortin, an instrument maker in Paris in the early nineteenth century, introduced a mercury barometer with a glass and leather cistern so designed that the barometer could be safely moved from one place to another. James Green began making Fortin-type barometers for the Smithsonian in the 1850s, though with a slightly different design to the cistern. This example marked “HENRY J. GREEN B'KLYN, N.Y.” was made after 1890 James Green's nephew and successor moved to Brooklyn.
Ref: "Green's Standard Barometer," in Henry J. Green, Meteorological and Scientific Instruments (Brookly, 1900), pp. 4-6.
C.F. Marvin, (Washington, D.C., 1894).
Currently not on view
Object Name
barometer, mercury
date made
H. J. Green
place made
United States: New York, Brooklyn
ID Number
accession number
catalog number
Measuring & Mapping
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
U.S. Naval Observatory

Visitor Comments

2/5/2016 10:54:26 PM
John Schurr
I am very possibly the last living employee of Henry J. Green Instrument Company, which was founded in 1832 by James Green. As a teenager in the mid sixties I worked at their plant in Westbury, N.Y. They had moved from Brooklyn in 1959. My father was the general manager. I even knew one of the owners, who's last name was Weygand.. I understand he was a part owner in 1912. I packed hundreds of rain gages that were destined for the Kansas City depot. I filled up many a tube of mercury for the Fortin type barometers. Today, I own my own company, which is a manufacturing job shop. I actually continue the tradition of making weather instruments. I make the Adirondack snow density gage, which HJ Green used to make. My company's name is Gamma Instruments. I had a detailed history of the company as well as mid sixties catalogs. I have been looking for them for years. Hopefully, they will turn up one day.
Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.