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Nice suggestions for at least sanity testing. In combination, it would seem a decent way to get a DMM back in the ballpark. Thanks. I'll give that a shot for the time being.
I vaguely remember someone here recommending an ebay option. I think it was just for voltage and maybe was budget friendly. This $44 unit is just more than I want to spend. I will just use SawMaster's approach if I have to spend that much.
Remember, this is rough testing and not true calibration. If I had a meter to recalibrate I’d either toss it, send it back for recalibration, or go to one of my fellow Ham’s shops to use something more toward “Lab Grade” to recalibrate it myself.
With free or cheap meters it’s not worth doing- just toss them and try again.
Phil
Check out voltagestandard.com They have several nice fixed voltage standards and a multi-function meter standard.
The way I remember it, a brand new Zinc-Carbon cell should be exactly 1.65V
I remember calibrating my EICO VTVM that way.
After lots of Googling and youtube videos I purchased this to check voltages on my DMM. There are quite a few different ones on the market with different chips.
I’ll second that I picked up half a dozen of these at .99 cents each during a sale and have them stuck around the house (On the fridge, the electrical panel and on the oil burner and in the garage) and one in each car and they perform very well. having either the magnet or the hook available makes them very useful actually a lot more useful them a handheld flashlight.
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I agree. I keep several of them in the trunks of my cars. The shape with the swivel hook and magnet make them very handy when you need to get under a car. One of my cars didn't have a trunk light. So in that car, it seconds as a hands-free trunk light. The magnets needed to be reglued eventually on all mine.
Thank you SawMaster, texaspyro, dchomak, and MRsDNF for your suggestions. Good stuff all. MRsDNF, that is the unit I was looking for. Muchas Gracias! :)
Today I got my first Harbor Freight flyer in the mail and it came with a coupon for a free tape measure! :bigsmile:
I just had an idea… the Harbor Freight fliers & catalogs would make good gift-wrapping paper!! :bigsmile:
Fixed that for ya! ;)
Please don't tell me you got all those tape measures for less than 60 cents. If you do, I gotta hear the how you rang all those puppies up without getting stopped or picked up by the HD Loss Prevention Police.
ImA4, I know it’s late on the East Coast and you must be tired.
But this is the Harbor Freight Deal Alert Thread. Not the Home Depot Deal Alert Thread :bigsmile:
IF this was the HD thread, I would have paid a penny a piece but this being the HF thread I got them for FREE. 
Yeah, THANKS
That Simple Test Editor always gets me.
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I was just signing back in to fix that mistake. Wow, that is crazy. All for free. So that would be almost 60 stories?
better check em all for accuracy...
They measure in Chinese inches… somewhere between 3 and 10 Chinese inches per US inch.
These tapes are actually quite nice… Mine is reads right-on alongside a Stanley and another no-name measure I compared against.
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, Good one