SILVA 55 6400/360 Military Compass MS

SILVA 55-6400/360 military compass – southern hemisphere (MS) model, 5 year warranty.

The SILVA 55 military compass features graduations in Mils*, an optical sighting system and the SILVA 1-2-3 system in the same unit.

The compass has a luminous graduation ring and markings for use in the dark, which when activated by daylight/flashlight will give up to 4 hours of luminescence.

The compass capsule is marked with 6400 mils on the graduation ring and 6400 mils + 360 degrees on the sighting scale.

Features:

• Type: SILVA 1-2-3 System, baseplate compass
• Lensatic sighting system
• Liquid filled capsule
• Sapphire jewel bearing
• High quality steel needle
• Hardened steel pivot
• Magnifying lens: Yes
• Declination adjustment:  No
• Clinometer: No
• Luminous markings: Yes
• Luminous graduation ring: Yes
• Illumination / active time after activation in light: 4 hours
• Silicon friction feet: Yes
• Patented red/black N/S lines in capsule
• GPS scales
• Scale lanyard (1:25, 1:50)
• Slope card
• Southern hemisphere (MS) model

Technical Specifications:

• Graduation Outer ring: 6400
• Sighting scale: 6400/360
• Resolution degrees / mils Outer ring: - / 50
• Precision sighting scale: 1 / 20
• Measuring scales 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   4 sec
• Settling time from 90 degree angle to complete rest   6 sec
• Accuracy +/- 0,5 degree (8,9 mils)
• Water resistance: Waterproof
• Altitude use: 5000m@-15 C
• Impact resistance: 30g in X YZ directions and free fall from 1.5 m height into gravel
• Temperature operating range: -30 to +60 C
• Material: Acrylic
• Size (mm): 126x60x16
• Weight:  39 grams
• Warranty: 5 Years

* Mils compasses

Mils compasses are divided into 6400 graduations rather than the standard 360 degrees.

Mils compasses are largely used by the military and army cadets for calculation of range and scale. For example, two objects that appear to be 100 mils apart and are 1000 metres away from the observer are around 100 metres apart on the ground.

A military compass is generally not suited for standard navigation for hikers, orienteers etc.