Re: Negus Marine Chromometer Unfortunately, I do not have the time available to confirm or deny my recollections on this. The story I remember is that Bond survey chronometers were used as part of the mapping of the geodetic survey marks that were used to map out state lines in the Northwest Territory, It is possible that this is just fantasy on my part, but that is the memory. As noted by Doc Jon in regard to the Crystal Palace, the English had a strong tendency to overlook developments in America. Crossman is not the most reliable source, as you know, but he talks about Bond supplying designs to English chronometer makers to build instruments for them. Bond's time distribution system used the Lund synchronizer from Barraud & Lund for at least some installations.