A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: John D. Howard
Date: 2018 Nov 25, 13:06 -0800
Thanks Brad. I was going blind re-reading old books ( PDF ) to see if there was something new the old folk knew. After my question to you I realized that a time ball would need a telegraph link to an obestorvory - a London or New York.
The harbor markers seem to me to have been used a smaller, remote harbors but like you, I can not find any use of the name " Harbor Marker". Most likely was the surveyor's monuments used to make harbor and coastal charts. I wounder what the OS in Britian called their monuments?
John H. 41N 100W