The Silva Compass 4 Militaire is a base plate compass designed for experienced military navigators, and is used by NATO Forces around the world.  The compass has a

Features:

• Measuring scales for positioning (GPS)
• Graduation in mils and degrees (6400° / 360°)
• Integrated adjuster for magnetic declination
• Magnifying lens and rubber feet for precision map work
• Luminous graduation ring and markings for compass reading in the dark - Once activated by daylight/flashlight it will give light up to 4 hours+ of light
• Clinometer
• Declination adjustment
• Sapphire jewel bearing for friction-free movement of the compass needle
• Patented red/black N/S lines in capsule
• Turnable capsule
• Accuracy:± 1° (17.8 mils)
  
• Altitude use: 5000m @-15 °C
• Impact resistance: 30g in XYZ directions and free fall from 1.5 m height into gravel
• Resolution degrees / mils: 2 / 50
• Scales: Baseplate: 1:25k, 1:40k, 1:50k, mm, inch, 
• Settling time from 90° angle to complete rest: 5 sec
• Settling time from 90° angle within ± 3°:2.7 sec
• Temperature operating range: -30 to 60°C
• UTM position plotting scales (Romer scales): 1:25k, 1:40k, 1:50k
• Variant: Magnetic North
• Sighting system: No
• Dimensions: 126 x 60 x 13 mm
• Weight: 50g
• Material: Acrylic, PC/ABS, TPU