Description
HP 403B AC Voltmeter Analog Vacuum Tube Test Meter Instrument
The HP 403B is a classic analog AC voltmeter from Hewlett-Packard's vintage test equipment line. This benchtop meter provides precise AC voltage measurement across a range of scales, making it suitable for laboratory work, field service, electronics troubleshooting, and precision electrical testing. The analog needle display offers immediate visual feedback for AC voltage measurements without requiring external power sources for the meter itself in many applications.
Specifications & What's Included
- Manufacturer: Hewlett-Packard
- Model: 403B
- Type: AC Voltmeter
- Technology: Analog with vacuum tube circuitry
- Measurement Type: AC Voltage
- Form Factor: Benchtop / Portable Test Instrument
- Display: Analog dial with needle indicator
- Typical Range: Multiple AC voltage scales (verify specific ranges with photos or datasheet)
- Era: Mid-20th century vintage test equipment
Applications
The HP 403B AC Voltmeter is a precision instrument designed for measuring alternating current voltages in laboratory and field settings. This class of analog vacuum-tube voltmeter was standard equipment in electronics labs, service centers, and industrial maintenance departments throughout the mid-20th century. Technicians and engineers used these meters to troubleshoot power supplies, verify signal levels, diagnose electrical faults, and perform precision measurements on AC circuits and transformers. The HP 403B remains popular with vintage equipment collectors, electronics enthusiasts, and restoration specialists who value its robust analog design and reliable performance. These meters are still functional and actively used in educational settings, hobbyist workshops, and by professionals maintaining legacy electronic systems.
This HP 403B AC Voltmeter has been inspected and appears to be in good used condition. It was pulled from a working environment where it was previously in service. The meter shows typical wear consistent with laboratory or field use. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
HP |
Model: |
403B |
Type: |
AC Voltmeter |
SKU: |
9067 |
Measurement Type: |
AC Voltage |
Form Factor: |
Benchtop / Handheld |
Technology: |
Analog / Vacuum Tube |
Condition: |
Used – Pulled from Working Environment |
Condition Notes: |
HP 403B AC Voltmeter in good used condition. Pulled from working environment. Typical wear from field/lab use. Contact us with questions before purchasing. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |