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Silva Expedition 4 Military 6400 Compass

Silva Expedition 4 Military 6400 Compass

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The Silva Expedition 4 Military Compass is a full-sized base plate compass for experienced navigators - used by NATO Forces around the world.


  • Measuring scales for positioning (GPS)
  • Graduated in miles and degrees ( 6400/360)
  • Magnifying glass
  • Rubber feet for precision map work
  • Gives light for up to 4 hours - luminated by daylight/ flashlight etc. 
Accuracy +/- 1° (17.8 miles)
Altitude use: 5000m @ -15°C
Clinometer No
Declination adjustment Declination scale inside capsule
Graduation 6400°/360° (360° inside the capsule), 6300°, 360°
Illumination 4 hours after activation in light
Impact resistance 30g in XYZ directions and free fall from 1.5m height into gravel
Magnifying lens Yes
Material Acrylic
Patented red/black N/S lines in capsules Yes
Resolution degrees / miles 2 / 50
Scales mm, inch 
Settling time from 90° angle to complete rest  5 sec
Settling time from 90° angle within +/- 3° 2.7 sec
Sighting System No
Silicon friction feet Yes
Size 126 x 60 x 10 mm
Temperature operating range -40 to +60°C
Type of compass Silva 1-2-3 Systwem baseplate compass
UTM position plotting scales (Romer scales) 1:25k, 1:40k, 1:50k
Water vresistance IP68 - (more than 100m)
Weight  36 grams

Silva 1-2-3 Compass User Guide, pdf brochure

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