HP 3410A AC Microvoltmeter teardown.
It appears this sample was built in 1978 or 79 (based on chip date codes). Found a few weak caps, I'll likely replace all AE's. It basically tries to work, but it has some glitches, I will go over it thoroughly and restore it to good working order, then have it takes its place on the shelf next to its matching vintage HP siblings.
As always, who cares about the text, here are some photos;