I've managed to locate additional papers by Michael Lombardi, including a discussion and test of analogue quartz watches' accuracy and stability, a history of radio time signal broadcasts (the first was in 1904) and a review of radio controlled wristwatches written in 2006. Here are the links:
The Accuracy and Stability of Quartz Watches
Does Anybody Really Know What Time It Is?
Radio Controlled Wristwatches
While these articles contain slightly more science than the first one I posted, they are equal models of clarity and just as interesting. WUS should make him an Honorary Fellow!
Copyright for the posted articles resides with the original holders.