How it works
Charles Ostrander Terwilliger Jr. was born in Pawtucket Rhode Island, March 22nd 1908…

The biography is extensive covering many areas of the life of Charles O. Terwilliger, Jr and his life’s work – including his role in horology. It must be realized that the original author left some portions of the story incomplete and that the design of the pages needed to be upgraded for modern internet users.
To navigate this biography, simply select the “Start Reading” button and follow through. Or you can select an area of interest below. Either way, you will discover just how impactful this man was on horology in general and the 400 Day Clock in particular.
The 70s and 80s
The Horolovar company and other projects, including the Horolovar 400 Day Clock Repair Guide.
Recent Posts
REPRODUCTION CLOCKS
Charles O Terwilliger, Jr – Clockmaker
Charles Terwilliger, through his company Horolovar, contracted with German Clockmakers to reproduce five iconic American time keepers. Some are historic, and some are just hilarious.

400-Day Clocks
~ Mun C W
Many of these images appeared on the original Charles Terwilliger biography website. Now they’re back for your enjoyment. Images courtesy of Mun C. W.
You can also read A History of the Horolovar Collection by Mun C. W. on this site.






