Aneroid Barometer

Description:

This is a cylindrical instrument, 5.5 inches in diameter. The silvered face is marked “SIGNAL SERVICE U.S. ARMY / L. CASELLA / MAKER TO THE ADMIRALTY & ORDNANCE / LONDON / COMPENSATED / 2634 / ‘FOR ISSUE’ / NO 21.” The scale around the circumference of the face extends from 17 to 22 inches of mercury, graduated in tenths; another scale indicates altitudes from below 10,000 to above 15,000 feet.

This was probably made after 1870 when the Signal Service was charged with organizing a national weather service. And it was probably made before the establishment of the U.S. Weather Bureau, as a civilian agency, in 1890.

Date Made: circa 1856-1897circa 1870-18971870 - 1890

Maker: L. P. Casella

Location: Currently not on view

Place Made: United Kingdom: England, London

See more items in: Medicine and Science: Physical Sciences, Measuring & Mapping

Exhibition:

Exhibition Location:

Credit Line: U.S. Weather Bureau

Data Source: National Museum of American History

Id Number: PH.314547Accession Number: 204612Catalog Number: 314547

Object Name: aneroid barometer

Measurements: overall: 5 1/2 in; 13.97 cmoverall: 6 3/4 in x 2 1/8 in x 5 3/4 in; 17.145 cm x 5.3975 cm x 14.605 cm

Guid: http://n2t.net/ark:/65665/ng49ca746ad-8347-704b-e053-15f76fa0b4fa

Record Id: nmah_1419863

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.