Object Details
- Description
- Brass instrument, 3¼ inches diameter, with silvered dial marked “Improved Altitude Scale / Surveying Aneroid / Compensated” and “GEORGE E. BUTLER / SAN FRANCISCO” and “MADE IN ENGLAND” and “IMPD PAT / NO 7318.” The back of the case is marked “TRADE MARK LONDON.” There is also a leather case with strap.
- The circumference of the face has three scales reading from 0 to 15000 feet: one in 25 foot increments, one in 50 foot increments, and one in 100 foot increments. A pressure scale reads from 18 to 31 inches of mercury. A smaller scale at the bottom of the face reads the temperature from 30 to 130 degrees Fahrenheit.
- This instrument is based on a British patent for “An Improvement in Metallic Thermometers and Barometers” that was issued to Thomas Wheeler, of London, in 1894. It may have been made by F. Barker & Son, a London firm that that is known to have produced compasses and aneroid barometers. It was sold by George E. Butler, a jeweler in San Francisco in the early 20th century.
- Location
- Currently not on view
- Credit Line
- Doris Hoffman
- ca 1900
- ID Number
- PH.335617
- catalog number
- 335617
- accession number
- 1977.0058
- Object Name
- aneroid barometer
- Measurements
- overall; barometer: 1 1/4 in x 3 1/8 in x 4 3/16 in; 3.175 cm x 7.9375 cm x 10.63625 cm
- overall; case: 1 5/8 in x 3 1/2 in x 4 1/4 in; 4.1275 cm x 8.89 cm x 10.795 cm
- place made
- United Kingdom: England, London
- See more items in
- Medicine and Science: Physical Sciences
- Barometers
- Measuring & Mapping
- National Museum of American History
- Record ID
- nmah_1432730
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746ad-b048-704b-e053-15f76fa0b4fa
