Let us not forget the famous long-case clock by Thomas Tompion in 1709 for the 
Pump Room in Bath, England.  It is an “equation clock” showing the difference 
between solar and mean time.   Here is a link to an image of the dial:
https://www.duetimeblog.com/wp-content/uploads/2009/09/img_2007.jpg

Tompion also placed a sundial outside of the Pump Room.   See 
http://bathsbloggers.blogspot.com/2016/03/the-tompion-clock.html for a photo 
along with the clock.

Cheers,
Sara

Sara J. Schechner
Altazimuth Arts
42°36'N   71° 22'W
West Newton, MA 02465
http://www.altazimutharts.com/<https://urldefense.proofpoint.com/v1/url?u=http://www.altazimutharts.com/&k=AjZjj3dyY74kKL92lieHqQ%3D%3D%0A&r=Y3uaNkd%2BN%2BBEMo7BAxbEQqOqpMk6uxYnCJsB4uxugzo%3D%0A&m=Ti1oQOLKwbdeBp0MOcYibsxY4Lg058dCGKYBaRLSNUY%3D%0A&s=2f04b2f3647abf5da1ada6decaf1b455ea2d0ead01efe881489e14a7d1adb139>

Sara J. Schechner, Ph.D.
David P. Wheatland Curator of the Collection of Historical Scientific 
Instruments
Lecturer on the History of Science
Department of the History of Science, Harvard University
Science Center 251c, 1 Oxford Street, Cambridge, MA 02138
Tel: 617-496-9542   |   Fax: 617-496-5932
[email protected]<mailto:[email protected]> |@SaraSchechner
http://scholar.harvard.edu/saraschechner
http://chsi.harvard.edu/



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