Silva Expedition 4B-6400/360 NATO Compass. ME. Tritium illumination.
MPN:  35687-3533 (ME)
Other Similar model: 35687-3531 (MN), 35687-3535 (MS)
Made in Sweden.
Warranty: 5 years one to one exchange with proof of purchase.

We will replace item with similar value if model out of production.

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 years.

Info

Type of compass:

Silva 1-2-3 System baseplate compass

Sighting System:

No

Magnifying lens

Yes

Declination adjustment:

Declination scale inside capsule

Clinometer:

No

Illumination / active time after activation in light:

Beta light – will give continuous light up to 7.5 years

Luminous compound:

Tritium compound 80 mCi

Silicon friction feet:

Yes

Patented red/black N/S lines in capsule:

Yes

Variant:

Magnetic Equator, Magnetic South, Magnetic North      


Specification:

Available graduations:

360°, 6300°, 6400° / 360° (360° inside the capsule

Resolution degrees / mils:

2 / 50

Scales:

mm, inch

UTM position plotting scales (Romer scales): 

1:25k, 1:40k, 1:50k

Settling time from 90 degree angle within +/- 3 deg:

2.7 sec

Settling time from 90 degree angle to complete rest:

5 sec

Accuracy:

± 1° (17.8 mils)

Water resistance:

IP68 – (more than 100 m)

Altitude use: 

5000m @-15 °C

Impact resistance:

30g in XYZ directions and free fall from 1.5 m height into gravel

Temperature operating range:

-40 to +60 °C

Material:

Acrylic

Size (mm):   

126 x 60 x 10

Weight (g):

36