Dating longcase clock movements
Synchronized or slave clocks[ edit ] Some clocks rely for their accuracy on an external oscillator; that is, they are automatically synchronized to a more accurate clock: They are considerably more accurate than quartz clocks as they can be accurate to within a few seconds over thousands of years. It was supplied by Ernest Webb, jewellers of Abbeygate Street, in The concentric minute hand was added to the clock by Daniel Quarea London clockmaker and others, and the second hand was first introduced.
We also have in stock a very original lantern clock by the maker William Hawkins, brother of Mark Hawkins. Most of this information quotes directly from Haggar and Miller.