Equipment Basics: 

   1 point principle Needless to say， geomagnetism. The north and south geomagnetic poles do not coincide with the geographic north and south poles， and in the slow movement is also constantly change in the position of the magnetic North Pole in one day. Magnetic declination after the Chinese geomancy feng shui master Shen Kuo was only discovered， so feng shui actually see the geographical position deviation every year， so-called "turned upside down." Meaning that the magnetic declination meridian map is drawn between geographic north and south poles， so the proper use of a compass on a map must be corrected magnetic declination. 

   2 inside the Earth's geomagnetic actually a location. Therefore， the compass needle pointing at high latitudes actually below ground level， which would form a "dip" a balance in the equatorial regions of the compass， in high latitudes north latitude， referring to the northern end will sink， guidelines will be upturned end the lid can not be met compass point. So the world is divided into five regions， each manufacturer compass to take a "balanced preprocessing" to adapt to the region. The most common in the northern hemisphere mid-latitudes， have adopted a counterweight to balance the guide end. Compass will be well-known manufacturers in the manual written for five regions which one. Pretreatment use more weight balance adjustment. 

   3 the purpose of filling the lubrication and stabilization， so called damping fluid. Production compass world famous brand recta Switzerland. silva Sweden. They were suunto Brunton ODM and OEM manufacturing. 

The world's best selling compass!! 

Easy to use， the turntable frame with a soft Dryflex material. 

Suitable for use in the map scale of 1: 50，000 and 1: 25，000. 

Orientation， Scout and mountaineering activities are applicable! 

Sapphire pointer gasket 

Hot casting pressure gauge scale 

Compass dial frame using Dryflex material， easy to operate 

Arc chassis 

Pointer inside the patented red / black direction indicator lines 

Applicable map scale of 1: 50，000 and 1: 25，000 

Internal pointer over the angle indicator with magnetic scale 

 

 

Because you can not set the color options on the property; please buyers under a single color Remark need! Thank you! 

Selectable spot colors: green， blue， black

 

The new Metro Mini portable compass series represents the city's mobile rhythm; Features Easy to use and easy to carry. 

Whether you are in the urban jungle or Metro are your reliable navigation friend， let you quickly and easily find directions anywhere! 

Attached climbing hook - easy attachment to clothing， bag or backpack 

Non-magnetic plant production (by magnetic interference minimum) 

2-3 second set orientation， high stability 

Can be hung on a backpack or waist， city， travel， leisure， driving， hiking， camping， etc. 

Weight 13g 

Thimble axis sapphire material 

The high-density silicone oil filler 

 

Professional compass 

Silva is a leading global manufacturer of compass， history can be traced back to 1933 SILVA Kjellstrom brothers invented the first liquid compass begins. 

SILVA headquartered in Stockholm， Sweden， where not only known as one of the world's most beautiful country， but also one of Europe's most loved outdoor sports. 

Chu Mu Lama SILVA compass is specified peak climber supplies. June 2