The style of writing is a world apart from that found in Dr. Johnston's History of the Light and Color Measurement: Science in the Shadows. Even apart from a comparison of this earlier with his later styles, my educational and work background would allow me to nitpick and even disagree on many of his explicit and repeated points with substatiated and unsubstantiated assertions, but I will do no such thing.
And I won't because, although I will probably never even meet and almost certainly never befriend Dr. Johnston, I would definitely like to do both. For I now realize that friends don't ever nitpick friends, and whenever possible should only disagree in the strictest privacy.
Anyway, before picking up this book I had never seriously considered the reality of spectrometers and spectroscopy. Although this book is completely down-to-earth on these two topics, for me, they represent an almost-magical, near-Atlantis-type world of instrumentation and measurement.