Antique Electronics and Vintage Solid State

DuMont 405 VTVM

I’ve been on the lookout for a DuMont 405 VTVM since Mike Kent posted about it on the Antique Radio Forum.

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In 1957, DuMont introduced their “400 Series” of test equipment, including the Type 405 VTVM. 

General Radio 1806-A Manuals

Many thanks for Philip Colston for procuring, scanning, and sharing these manuals ...

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… for the General Radio 1806-A Electronic Voltmeter.

The first is the Revision A manual for the 1806-AR rackmount version of the meter. …

Triplett meter feet

The back of the Bakelite case for a typical Triplett VOM or VTVM is attached to the front by four machine screws.

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The screws are accessed through deep wells molded into the back of the case. While there are small feet molded into the Bakelite casting, …

© Steve Byan 2011-2019