I'm looking for a book that goes into *great* detail about the flight
instruments.

I have all the standard stuff, like the Jepp Instrument/Commercial
book, Instrument Flying Handbook, Lombardo's Aircraft Systems,
Kershner's books, and a few A&P books. But most of them only have a
page or two, with sketchy diagrams that go only partially explained.

Jepp makes a book with a title something like "Flight Instruments and
Avionics". Can anyone recommend it?