RV722 KVD

[niner_007]

I’ve snatched one of these things from eBay recently (it’s my second one), has been years for it to show up in the listings, these are very rare. I like them for the compact form factor, it’s 1/2 the size of an 720A.

[TiN]

Nice box, hopefully it was cheap.
Benefits of 720A are self-calibration and ability to produce DC linearity better than 0.1ppm.

[niner_007]

Yep, these were cheap.

I have a few 720A. The most recent one from ebay was in like new condition, original label still attached, no scratches, no decay, and only about 10 years old, should post some pics at some point.

[Echo88]

That would be nice niner_007, would be interesting to see how more recent units are constructed. 

[Conrad Hoffman]

I also have an RV722 or similar, because I haven't found a good deal on a 720A. They're pretty decent, though no equal of the 720A. On that last photo, I think they trimmed the resistors using an abrasive electric drafting eraser, then coated the area.