The device is a hit, worldwide. In our latest eBay listings there are about 100 units sold. And we have a 100% feedback score.
There are multiple hypothesis that could be consistent with these results. You have a hypothesis that you have a natural bias towards, the one that proves you right, and makes you money.
An alternate hypothesis is that your customers don't know what they don't know, and aren't able to adequately validate your claims. And further, that you have, through cunning or dumb luck, chosen a combination of price point and claimed precision such that anyone with the knowledge and equipment to validate your claims isn't willing to invest the time, money and energy necessary to prove or disprove them.
I love the idea of an outsider proving the experts wrong. I know though that that can cloud my judgement. So, I look for independent sources of evidence. If you are both genuine and truly clever, you'll find ways to turn some of your critics into allies, rather than continuing to use them as foils to promote an underdog narrative.
More speculation. We've sold this item in Asia, Japan, every western European nation, South America, Africa, Russia, every US state, UK, China, Australia, New Zealand! WHY, because residents of these locations cannot find something better for the price. It's a revolutionary product unlike anything else in the world. We've sold to university labs, calibration labs, industrial labs. One of our buyers said he bought our unit so he wouldn't have to lug around his Fluke 732B!
It is possible that everyone who purchases the unit is incorrect, and one person who hasn't purchased one 'is' correct. But it's probably the other way around. At least that's what seems rational to me. I've seen the results with my own eyes, many times. Our quality control has improved greatly since the beginning.
There is one problem I have. I cannot go into detail on the principles involved in exactly how the various parts of the device work. This creates doubt on this board. But when I first came here it was to simply ask that people not judge the device and its capabilities without examining one. I don't care if a DC standard follows every conventional maxim, if it doesn't perform, junk it. Because I keep trade secrets, several members here have made the rash assumption that there are no founding theories to explain why this device works better than others like it.
I'll give everyone a freebee. Enclosing the device is key.
Finally, anyone can easily check whether they have an thermoelectric error by just reversing the leads on the meter. If negative is the same as positive, it's an accurate reading. If they're different, you have to wait until the temperature equalizes. You can actually watch this effect by holding one of the leads attached to the standard. The heat from the skin will change the meter reading. Then, later it will return to what it was.