The “full-sized” base plate compass for experienced navigators – used by NATO Forces around the world
Silva Compass 4B Military - NATO-6400/360 (Beta Illumination)
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.
| Available graduations | 6400/360 (360 inside the capsule), 6300, 360 | 
| Resolution degrees / mils | 2 / 50 | 
| Measuring scales on base plate | mm, inch | 
| UTM position plotting scales (Romer scales) | 1:25k, 1:50k, 1:40k | 
| 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 degree (17.8 mils) | 
| Waterproof | 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) | 126x60x10 | 
| Weight g | 36 |