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- About Yokogawa:
- Research & Development:
- Virtual Museum of Measurement:
- 1. Standard AC Ammeter (DLS):
- 2. Recording Meter:
- 3. 200C Audio Oscillator:
- 4. N-3 Electromagnetic Oscillograph:
- 5. A Collection of Electric Meters:
- 6. Universal Galvanometer:
- 7. Electrostatic Voltmeter:
- 8. Edison's Incandescent Lamp and Lamp Power Meter:
- 9. Circuit Testers: Past and Present:
- 10. Illuminance Meters:
- 11. Admittance Bridge:
- 6. Wife of a Rice Shopkeeper (woodblock print):
- 7. La Fee Electricite (lithograph):
- 15. Large Screen Multimedia Presentation>
- From Battery Testers to Multimeters:
- Scientific Tools and Measuring Instruments Used as Teaching:
- Yokogawa and the Electromagnetic Oscillograph:
- Learning from the Smithsonian Institution:
- Hewlett-Packard's Contributions to Our Collection:
- 2. Recording Meter
2. Recording Meter
AC/DC Watt-hour Meter
Rated for 220 volts and 2000 amperes. Heavy current flowed directly into this device, which was mounted on a marble distribution board. Manufactured by General Electric around 1910 and donated by John F. Welch, the former Chairman and Chief Executive Officer of General Electric
Rated for 220 volts and 2000 amperes. Heavy current flowed directly into this device, which was mounted on a marble distribution board. Manufactured by General Electric around 1910 and donated by John F. Welch, the former Chairman and Chief Executive Officer of General Electric