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- Weston Model 156 Voltmeter, circa 1914 -
- circa 1914
- Collections - Artifact
Weston Model 156 Voltmeter, circa 1914
- Onondaga Voltmeter, 1893-1902 -
- 1893-1902
- Collections - Artifact
Onondaga Voltmeter, 1893-1902
- Ayrton & Perry Voltmeter, 1883-1890 - Companies that generated and distributed electrical power in the late 1800s needed equipment to monitor and measure output. Apparatus used in scientific laboratories proved insufficient. Electrical engineers needed robust, rugged, and portable instruments that they could read quickly without performing complex calculations. William Ayrton and John Perry developed this direct reading voltmeter among other measuring instruments for the new industry.
- 1883-1890
- Collections - Artifact
Ayrton & Perry Voltmeter, 1883-1890
Companies that generated and distributed electrical power in the late 1800s needed equipment to monitor and measure output. Apparatus used in scientific laboratories proved insufficient. Electrical engineers needed robust, rugged, and portable instruments that they could read quickly without performing complex calculations. William Ayrton and John Perry developed this direct reading voltmeter among other measuring instruments for the new industry.
- Westinghouse Type TM Voltmeter, 1911-1925 -
- 1911-1925
- Collections - Artifact
Westinghouse Type TM Voltmeter, 1911-1925
- A.K. Eaton Voltmeter, 1884-1890 -
- 1884-1890
- Collections - Artifact
A.K. Eaton Voltmeter, 1884-1890
- Weston Combination Voltmeter-Ammeter -
- Collections - Artifact
Weston Combination Voltmeter-Ammeter
- Weston Voltmeter, 1900-1910 -
- 1900-1910
- Collections - Artifact
Weston Voltmeter, 1900-1910
- Westinghouse Type SL Voltmeter, circa 1911 -
- circa 1911
- Collections - Artifact
Westinghouse Type SL Voltmeter, circa 1911
- Weston Voltmeter, 1913 -
- 1913
- Collections - Artifact
Weston Voltmeter, 1913
- Kelvin Graded Galvanometer, 1883 -
- 1883
- Collections - Artifact
Kelvin Graded Galvanometer, 1883