Thermometer

Description:

This is a sensitive precision instrument that was probably used as a standard for evaluating instruments sent to meteorological field stations. The mercury-in-glass thermometer is mounted on a white porcelain plate marked "NEGRETTI & ZAMBRA, SCIENTIFIC INSTRUMENT MAKERS, LONDON" and "ABSOLUTE" and "29" with the M/O monogram of the British Meteorological Office, the N/Z monogram of the firm, and the K/O monogram of the Kew Observatory.

The plate is graduated every 5 degrees from 245 to 325. The back of the stem is white enamel and marked "29" and with the M/O and N/Z monograms; the front is graduated every degree from +243 to +325 and numbered at 245, 273, and 320. It came to the Smithsonian from the U.S. Weather Bureau.

Date Made: early 20th century

Maker: Negretti & Zambra

Location: Currently not on view

Place Made: United Kingdom: England, London

Subject: U.S. Weather Bureau

Subject:

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

Exhibition:

Exhibition Location:

Credit Line: U.S. Weather Bureau

Data Source: National Museum of American History

Id Number: PH.314556Accession Number: 204612Catalog Number: 314556

Object Name: thermometer

Measurements: overall: 11 in; 27.94 cmoverall: 11 1/8 in x 1 7/16 in x 1/2 in; 28.2575 cm x 3.65125 cm x 1.27 cm

Guid: http://n2t.net/ark:/65665/ng49ca746b2-53d5-704b-e053-15f76fa0b4fa

Record Id: nmah_1289351

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