SILVA COMPASS 55-6400 6400/360

Probably the most suitable compass for artillery.
The Expedition 55 is a unique compass with a precision optical sighting system. In addition to the Silva 1-2-3 system, which provides unmatched accuracy and versatility in the field.
Among its functions:
Designation of objectives and command posts.
Romer scale, record the situation on the map.
It has silicone feet on the base plate for easy grip, a magnifying glass and reflective dots for night navigation.
Compass ideal for use with GPSExactness: ± 0.5 ° (8.9 mils)
Altitude use: 5000m @ -15 ° C
Clinometer: No
Declination adjustment: No
Graduation: 6400″ at the base (limbus) Graduation: 6400″ + 360º in the observation window.
Illumination: 4 hours after activation on light
Impact resistance: 30g in XYZ directions and free fall from 1.5 m height
Magnifying glass: Yes
Material: Acrylic
Patent red / black N / S lines: Yes
Degrees of resolution / mils
Outer ring: 2/50 Scale of accuracy: 1/20
Scales: 1: 25k, 1: 40k, 1: 50k, mm, inch
Time from 90° angle to complete rest: 6 sec.
Time from a 90° angle within ± 3°: 4 sec.
Observation system: prismatic precision
Dimensions: 126 x 60 x 16 mm
Temperature operating range: -40 to +60 ° C
UTM position scales (Romer scales):1: 25k, 1: 40k, 1: 50k
Water resistance: IP68 – (10 m)
Weight: 39g