Expositions are the timekeepers of progress.
"The Art of Public Speaking"
Dale Carnagey (AKA Dale Carnegie) and J. Berg Esenwein
They also, like most of Tompion's timekeepers, had an hour and a minute hand.
"Christopher and the Clockmakers"
Sara Ware Bassett
You may remember that when we were talking of sundials I told you they were not exact timekeepers."
"Christopher and the Clockmakers"
Sara Ware Bassett