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Old 09-17-2010, 01:01 PM
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kcvet kcvet is offline
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Simpson 260 VOM





more photos

the 260 portable VOM was the standard for the industry for many years. its still available today. cost from 205 to 227. I had one of these on my bench. we all did.

The front on the Simpson 260-6 changes from the Series 5, by the addition of a "transit" position

at the 500 MA position on the function switch. The 50 Micro Amp jack is also marked as 250 MV.

The Series 6 also has a +1 Volt D.C. jack and uses the 0 -10 D.C. Scale.

The A.C. / D.C. 1000V jacks are now combined into one

The Simpson 260-6 has the Taut Band Suspension dial.

The 260 Series 6 is the first to have the three Amp-Clamp scales.

Controls include: Ohms zero adjustment, AC - DC Voltage selector switch,

and a 12 position Function / Range selector switch. Eight recessed probe jacks.

The off or "transit" position is at the 500 MA location.

I used this for accurate resistance measurements. for AC/DC voltage i used a DVM. on ohms X 1 scale there was 1.5VDC between the probes. I used this source to see if transistors would tun on or off.

here's mine. my late brother N law gave this to me. its used but not used up. still works great. I use now for electrical problems around the house.

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Old 09-18-2010, 11:07 AM
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The Simpson 260 VOM

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
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Old 09-18-2010, 08:26 PM
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.....and did you know that Simpson is American Indian owned? Talk ablout a REAL American meter! What I like most about the company is that they still support their analog meters - Talk about service! I love my 260XLMP - mirrored meter scale, low power ohms function, and meter protection - that circuit breaker/relay combo is real genius!

Cheers,
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Old 09-18-2010, 11:27 PM
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I like my 260 a lot, but I typically still use a modern DMM.
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Old 09-19-2010, 07:58 PM
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I too use a DMM for 90% of my measurements. The 260 comes out when I set amp bias - the low voltage scales allow me to measure the small bias voltages and the needle swing shows me if it is increasing or decreasing. For all other peaking/nulling, I use my RCA WV-98C Senior VoltOhmist VTVM.

When I was in the Navy, the 260 was the go to tool on the flight line - the Fluke and Triplett DMM displays didn't like the cold temps, and the batteries had better be good otherwise no joy. With the 260, even with no batteries, you could still measure voltage! And even with a weak battery, you could get at least an indication of continuity.

Like most tools, each has it's merits.

Cheers,
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