MILITARY 4-6400/360 Military Compass MS by SILVA

The SILVA 4-6400/360 Military Compass MS is a full-sized baseplate compass designed for experienced navigators and military applications. The MS version is calibrated for the magnetic southern hemisphere, making it suitable for use in Australia and New Zealand.
The compass combines the SILVA 1-2-3 System with 6400 mil and 360° graduations, providing flexible navigation and map-reading capability. A magnifying lens assists with detailed map work, while luminous markings provide illumination for night navigation after activation by daylight or a flashlight.

Features

• Full-sized baseplate compass for experienced navigators
• SILVA 1-2-3 System
• MS model calibrated for the magnetic southern hemisphere
• Graduated in 6400 mils and 360°
• Additional 6300 graduation
• Magnifying lens for detailed map work
• Rubber feet for precision map work
• Luminous markings activated by daylight or flashlight
• Illumination for up to 4 hours after activation
• Declination scale inside the compass capsule
• Liquid-filled compass capsule
• GPS positioning scales

Specifications
Brand: SILVA
Product Code: SIL356921515
Model Number: 4801006
Product Type: Military Baseplate Compass
Compass System: SILVA 1-2-3 System
Compass Variant: Magnetic South (MS)
Graduation: 6400 mils / 360°
Additional Graduation: 6300
Accuracy: ±1° (17.8 mils)
Scales: 1:25k, 1:40k, 1:50k, mm, inch
Declination: Declination scale inside capsule
Magnifying Lens: Yes
Luminous Markings: Yes
Illumination: Up to 4 hours after activation
Water Resistance: IP68, waterproof to 10 m
Material: Acrylic
Dimensions: 126 x 60 x 10 mm
Attachment: Detachable lanyard
NSN: 6605-99-582-5812
Barcode/GTIN: 7318860058660

The SILVA 4-6400/360 Military Compass MS combines military-oriented navigation features with detailed map-reading scales and southern hemisphere calibration, making it a practical choice for field navigation, outdoor use and professional applications.

One of the most useful things to understand when using a 6400-mil compass is the relationship between angular measurement and distance.
The simple rule is:
1 mil at 1 kilometre = 1 metre
In other words, if you are 1,000 metres away from an object, an angle of 1 mil represents approximately 1 metre of width or height at that distance. This is the basis of the military mil relation and makes mils particularly useful for estimating distances and judging the size or separation of objects.

Why Does 1 Mil Equal 1 Metre at 1 Kilometre?
A 6400-mil compass divides a complete circle into 6,400 equal parts. One mil therefore represents a very small angle.
At a distance of 1,000 metres, that angle corresponds closely to 1 metre across the ground.