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Maker:

California Electrical Works  Search this

Physical Description:

wood (overall material)

paper (label on top of the instrument material)

brass (overall material)

Measurements:

overall: 27 1/8 in x 13 1/2 in x 11 3/4 in; 68.8975 cm x 34.29 cm x 29.845 cm

Object Name:

seismograph

Place made:

United States: California, San Francisco

Used:

United States: Ohio, Cleveland

Date made:

late 1880s

Credit Line:

Case Institute of Technology

ID Number:

PH.323669

Catalog number:

323669

Accession number:

251332

See more items in:

Medicine and Science: Physical Sciences

Seismographs

Science & Mathematics

Measuring & Mapping

Data Source:

National Museum of American History

GUID:

http://n2t.net/ark:/65665/ng49ca746b3-1a63-704b-e053-15f76fa0b4fa

EDAN-URL:

edanmdm:nmah_996607

Maker:

California Electrical Works  Search this

Physical Description:

glass (overall material)

green (overall color)

Measurements:

overall: 4 1/4 in x 2 1/2 in; 10.795 cm x 6.35 cm

Object Name:

Insulator

Other Terms:

Insulator; Insulation

Credit Line:

from Western Union Corporation

ID Number:

EM.331548

Accession number:

294351

Catalog number:

331548

Collector/donor number:

22-40

See more items in:

Work and Industry: Electricity

Data Source:

National Museum of American History

GUID:

http://n2t.net/ark:/65665/ng49ca746a5-5b2a-704b-e053-15f76fa0b4fa

EDAN-URL:

edanmdm:nmah_712450

Maker:

California Electrical Works  Search this

Physical Description:

glass (overall material)

Measurements:

overall: 4 1/8 in x 2.5 cm; 10.4775 cm x in

Object Name:

Insulator

Other Terms:

Insulator; Insulation

Credit Line:

from Western Union Corporation

ID Number:

EM.331583

Accession number:

294351

Catalog number:

331583

Collector/donor number:

22-15

See more items in:

Work and Industry: Electricity

Data Source:

National Museum of American History

GUID:

http://n2t.net/ark:/65665/ng49ca746a5-3453-704b-e053-15f76fa0b4fa

EDAN-URL:

edanmdm:nmah_713679