Simpson 260 VOM

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kcvet,
That was a great article about a really tough meter.
The Simpson Model 260 VOM has been in service, military and commercial, since the late 1930s ... and I thought I was old.
You can find downloadable schematics and operation manuals for every Simpson Model 260 VOM, and other Simpson products, at the following website.
http://www.simpson260.com/downloads/downloads.htm