Pitkin Pocket Aneroid Barometer

Description
The inscriptions on the face of this barometer read “J. & H. J. GREEN / NEW YORK” and “JAS PITKIN / Maker / LONDON / COMPENSATED” and “U.S.G.S. No 181.” They indicate a date between 1879 and 1885 when James and Henry J. Green were working in partnership. The U.S. Geological Survey was established in 1879.
The pressure scale around the circumference of the face reads from 20 to 31 inches of mercury; the altitude scale reads from zero to 12,000 feet.
James Pitkin received a British provisional patent (#2947) for “Improvements in Aneroid Barometers” in 1861. In 1870, together with Thomas W. Short, his partner at that time, he brought out an Illustrated Catalogue of Aneroid Barometers.
Location
Currently not on view
Object Name
barometer, aneroid
date made
1879-1885
retailer
J. & H. J. Green
maker
Pitkin, James
Measurements
overall: 2 3/4 in; 6.985 cm
place made
United Kingdom: England, London
ID Number
PH*247925
catalog number
247925
accession number
47736
subject
Measuring & Mapping
Barometers
See more items in
Medicine and Science: Physical Sciences
Barometers
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
U.S. Geological Survey

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