20 X 120 Kollmorgen Mark I 45-degree Binoculars
Kollmorgen 20 X 120 is known as one of the most massive “Navy Big Eyes” ship binoculars used by the U.S. Navy. U.S. Navy ships would mount a 20 X 120 Big Eye binocular on the deck just off the bridge. The 45-degree lens angle provided ease of use aboard ship where lookouts could spend hours scanning the horizon. Long-range military observation relied on Big Eye binoculars since the late 19th century. They were preferred for their large magnification, which gave a significant