Home / Expedition 4B NATO

Expedition 4B NATO

Art.no: 35687-3531
COMPASS 4B NATO-6400/360
  • Type of compass - Silva 1-2-3 System baseplate compass
  • Compass capsule / needle
  • Sighting System - No
  • Magnifying lens - Yes
  • Declination adjustment - Decl scale in capsule
  • Clinometer - No
  • Illumination / active time after activation in light - Yes 7.5 hours
  • Luminous compound - Everglow™
  • Silicon friction feet - Yes
  • Other - Patented red/black N/S lines in capsule
Magnifier
Night Use
GPS Romer Scale
Declination
1-2-3 GO!
Scales
Direction
Available graduations6400/360 (360 inside the capsule), 6300, 360
Resolution degrees / mils2 / 50
Measuring scales on base platemm, inch
UTM position plotting scales (Romer scales)1:25k, 1:50k, 1:40k
Settling time from 90 degree angle within +/- 3 deg2.7 sec
Settling time from 90 degree angle to complete rest5 sec
Accuracy+/- 1 degree (17.8 mils)
WaterproofIP68 - (more than 100 m)
Altitude use5000m@-15 C
Impact resistance30g in XYZ directions and free fall from 1,5 m height into gravel
Temperature operating range-40 to +60 C
MaterialAcrylic
Size (mm)126x60x10
Weight g36
application/pdf icon2010-silva military_lowres.pdf
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The “full-sized” base plate compass for experienced navigators – used by NATO Forces around the world. Mainly used by the infantry as a soldier’s or officer’s compass. Additional features include measuring scales for positioning (GPS), graduated in mils and degrees (6400/360), magnifying glass and rubber feet for precision map work. BetaLight illumination will give continuous light up to 7,5 hours. Will give light up to 4 hours.

Suitable for:

Military

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Silva 1-2-3 System logo
What is this?

I know my position on the map. How do I go to a lake in the forest that I see on the map?

The easiest way to set a course towards the lake is with a simple and safe system used by expeditions, youth organisations, mountain guides, armies, orienteers and other navigators the world over: the Silva 1-2-3 System®

Silva1-2-3 System

  1. Place the compass on the map with the edge of the compass along the desired line of travel. Make sure Direction of Travel arrow points towards your destination.
  2. Rotate the compass housing until N on the dial points North on the map. Check that the compass housing red/black North/South lines are parallel with the map’s meridians.
  3. Hold the compass in hand and turn your body until the red end of the compass needle (North) coincides with the red arrow in the bottom of the compass housing. The front of the compass with the direction of travel arrow is now pointing towards your destination.

NOTE: If using a mirror-sighting compass: angle the mirror/lid approximately 45 degrees towards yourself and hold with straight arm out in front of you. Now, while looking in the mirror to see that the needle aligns with the red/black N/S arrow, sight above the mirror (using the sight) towards an object in the field in line with the direction of travel.

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Learn how to navigate with Silva Compasses.

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