It's $8 and the AD584L.
I have a voltage reference (Hao Qi Xin) which has served me well. (Courtesy Franky Tong)
The following products have been discontinued:
Vref5-002
DMMCheck
DMMCheck Plus
The Instek GDM-8251A you mentioned is so tempting. I see one in like new condition on ebay for $120 shipped.
http://www.ebay.com/itm/GW-Instek-120-000-Counts-Dual-Display-Multimeter-GDM-8251A-/291980567514
Thinking about just getting this one. It's $8 and the AD584L. They also measure with a 6 digit calibrated multimeter, at all four voltages: 2.5, 5, 7.5 & 10V. And they share their results on the bottom on a label. All you have to do is dial in your meter to match their numbers.
Shame this wasn't on eBay UK! I might have saved a few quid/bucks. I've just purchased a HP3478A. It was clean and tidy and also described as calibrated. The photo showed a comparison with a calibrated 6.5 digit DMM. It was listed at 175GBP, but since offers were invited, I made an offer of 150GBP which was accepted, so cost to me was 165GBP shipped. Not at the cheapest end but still within the price bracket in the opening post.
The Instek listing seems to be a liquidation sale of multiple units so I would guess that they are probably being sold 'as is' or with basic power on checks performed, but but there is no harm asking the seller about the calibration. In any case its open to offers, so if you are thinking of purchasing it may be worth putting in an offer of $20-$30 below the asking price and see what happens?
Sorry but I can't comment on Instek vs HP as I have not had the opportunity to compare.
Thinking about just getting this one. It's $8 and the AD584L. They also measure with a 6 digit calibrated multimeter, at all four voltages: 2.5, 5, 7.5 & 10V. And they share their results on the bottom on a label. All you have to do is dial in your meter to match their numbers.
Beware, not all meters can be calibration adjusted that easily. They might need specific voltages and all ranges done, not just individual.
It's been a very useful device and it's too bad he is discontinuing it.
Seems like you got an excellent deal on that HP meter, especially since it has been calibrated and looks clean Good score! Regarding the calibration of these "refurbished" meters this guy is selling, I did ask, and he replied "nope".
Seems like you got an excellent deal on that HP meter, especially since it has been calibrated and looks clean Good score! Regarding the calibration of these "refurbished" meters this guy is selling, I did ask, and he replied "nope".
Yes, as suspected. If it is in good working order then you also seem to have yourself a very good deal on that Fluke 8050 as well. Flukes keep their calibration pretty well so hopefully it will be pretty accurate.
The Instek GDM-8251A you mentioned is so tempting. I see one in like new condition on ebay for $120 shipped.
http://www.ebay.com/itm/GW-Instek-120-000-Counts-Dual-Display-Multimeter-GDM-8251A-/291980567514
Title says "seller refurbished", so I suppose I should question the seller and ask if that means it has a fresh calibration. How do these compare to the HP bench meters in the $100-300 range?
In case you hadn't seen them, there are several recent threads on this meter. Several of us have purchased them. Thanks to the recent ITT bankruptcy there are a bunch of them selling at bargain prices on eBay. They have some nice features like dual display and the ability to display both voltage and current measurements (interleaved) at the same time. They are easy to calibrate - see this thread or other recent threads (just do a search).
IIRC it was ~$ 70, but its redeeming feature was it contained a # of standards; voltage, resistance and frequency....
Mr B will put us right on just what it had.
I still need to get another multimeter, a 5.5 digit one.