403B - Barbouri's Electronics Projects

August 17, 2019August 21, 2019

Hewlett Packard HP 403B AC Voltmeter Restoration

Hewlett Packard HP 403B front reading 0 dB

Another local Ebay find was this Hewlett Packard HP 403B AC Voltmeter in a protective HP vertical case. The case did an excellent job of protecting the meter over it’s now 48 year life.

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