Compass 55-6400/360 MSThe Silva 55 6400 360 MS Mils Compass is an upgraded replacement for the NSN'd Silva 54 6400B Compass. It features improved readability and distinct markings, making it one of the most versatile compasses globally, particularly for artillery, target acquisition, and command posts. The 55 combines an optical precision sighting system with the SILVA 1 2 3 SYSTEM compass in a single unit, ensuring unmatched precision and versatility in the field.