eBay USA made voltage references

[rhb]

Does anyone here have any experience with these?

https://www.ebay.com/itm/10-Volt-10-V-DC-Prec-Voltage-Reference-Standard-Nulled-to-Fluke-732A-or-732B/251756273626

They seem rather too good to be true.

[Kosmic]

Read this first 

https://www.eevblog.com/forum/metrology/calibratory-d-105-dc-precision-voltage-reference-standard/

[rhb]

Thanks!  I read enough to not want one.  It's interesting that it is no longer called a "Calibratory  D-105".   I'd guess so it is harder to check up on.

I just ordered one of Doug Malone's  10 V references.  It's 1/3 the price and has the distinct advantage of being a quality piece of work and not a nut job product.

[Kosmic]

Good choice