'Practical Clock Escapements'. By Laurie Penman
It's another 20 years older now, but that book for me represents a bit of return to mechanical devices and engineered futuristic 'nanotechnology' devices. (Even though that book kept the topic on regular clocks.)
That book was a sort of symbol, there in the office room, surrounded by mechanical prototypes of computer subsystems. Besides, it provided a needed practical grounding, reality check, as I (struggled) to understand the details in the book. Had a pleasant and interesting talk with the book's author, Mr. Penman himself, who I recall was a mechanical engineer.