Probably the most resourceful compass in the world for artillery; target acquisition and command posts. The 55 is a unique compass featuring both an optical precision sighting system and a SILVA 1-2-3 SYSTEM Compass in the same unit, giving unbeatable precision and versatility in the field.

Bearings can be taken with accuracy to within half a degree. The compass has a 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. 6400 mils on the graduation ring and 6400 mils + 360 degrees on the sighting scale.

Specifictions

• Accuracy: ± 0,5° (8.9 mils)
• Altitude use: 5000m @-15 °C
• Clinometer: No
• Declination adjustment: No
• Graduation: 6400° / 360°
• Illumination: 4 hours after activation in light
• Impact resistance: 30g in XYZ directions and free fall from 1.5 m height into gravel
• Magnifying lens: Yes
• Material: Acrylic
• Patented red/black N/S lines in capsule: Yes
• Resolution degrees / mils Outer ring: – / 50 Precision sighting scale: 1 / 20
• Scales: Baseplate: 1:25k, 1:40k, 1:50k, mm, inch
• Settling time from 90° angle to complete rest: 6 sec
• Settling time from 90° angle within ± 3°: 4 sec
• Sighting System: Prismatic precision
• Silicon friction feet: Yes
• Size: 126 x 60 x 16 mm
• Temperature operating range: -30 to +60 C
• Type of compass: Baseplate, Lensatic precision sighting compass, Silva 1-2-3 System Mirror sighting compass
• UTM position plotting scales (Romer scales): 1:25k, 1:40k, 1:50k
• Variant: Magnetic Equator, Magnetic North, Magnetic South
• Water resistance: Waterproof
• Weight: 39g