The Old Tube Radio Archives

Old Tube Radios and Electronics Database

Search

Main menu

Skip to primary content

Skip to secondary content

Home
OTR Network
Companies
OldTubeRadio.net
YouTube
Facebook
Recent Updates
Fresno History

Hewlett Packard 428B

Make

Hewlett-Packard

Model

428B

Year

1961~

Description

Clip-On DC Milliammeter

Description Clip-On DC Milliammeter

Posted in Categories: Hewlett Packard.

Published on: November 20, 2025 - Last updated: October 23, 2026

Leave a Reply Cancel reply

You must be logged in to post a comment.

The information contained on this website is for information only. Oldtuberadio.com nor The Old Tube Radio Network or it's members makes any warranty on the information contained herein in regards to it's validity or correctness as the data is derived from many sources, some of which the accuracy can not be verified.

Copyright © 1999 - 2026 - OldTubeRadio.com.