For what it's worth, I have found the LB02A to be fantastic!
Wouldn't call it a true standard, but it's incredibly capable and easy to use. - JRH
I am looking at this as the complimentary opposite to a bench top multi-meter. Where a multi-meter measures A,V, Ohms and sometime other things, the LB02A generates these. I could see this being useful for prototype development.
At a pinch, it could be used as a basic transfer standard, but not in a certified calibrated way.
I don't see the LB02A as a voltage standard like I don't see a voltage standard being a process calibrator.