by Terry_Pepper » March 20, 2013, 12:55 pm
There were o total of five Second Order Fresnel-style lenses used in US lighthouses on the Great Lakes as follows: White Shoal, Spectacle Reef, Grosse Point, Stannard Rock and Rock of Ages. Grosse Point is the only one with its lens still in place in its lantern, all four others having been removed for museum display.
There were o total of five Second Order Fresnel-style lenses used in US lighthouses on the Great Lakes as follows: White Shoal, Spectacle Reef, Grosse Point, Stannard Rock and Rock of Ages. Grosse Point is the only one with its lens still in place in its lantern, all four others having been removed for museum display.