Instrument

Instrument

<< >>
Usage conditions apply
Downloads
Description
This curious instrument from the U.S. Weather Bureau has a vacuum connection, a thermometer and a manometer suspended within a bell jar, 7.5-inches high. The “Jas. Green / Balto” inscription on the thermometer is that of an immigrant instrument maker who worked in Baltimore in the 1830s and 1840s.
Location
Currently not on view
Object Name
pneumatic instrument
Measurements
overall: 7 1/2 in x 5 1/4 in x 7 in; 19.05 cm x 13.335 cm x 17.78 cm
overall: 7 3/4 in x 7 in x 5 in; 19.685 cm x 17.78 cm x 12.7 cm
ID Number
PH.323502
catalog number
323502
accession number
251558
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Comments

Add a comment about this object