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Suunto Arrow-30 Nh Compass

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North Hemisphere

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Descriptie en kenmerken Suunto Arrow-30 Nh Compass

Suunto Arrow-30 Nh Compass:

Super-fast ergonomically shaped compass, leads the way in competitive navigation.

- Available for northern hemisphere only

- Dual and jewel bearing

- Twin magnets

- Fast and wide plastic needle

- Baseplate with magnifying lens

- Control marking holes

- Extremely fast setting steady needle

- Printing technology designed for active orienteers

- Comes with lanyard

- Size: 57 x 114 mm / 2.2" x 4.5"

- Weight: 33 g / 1.2 oz

Specialized Sports Compasses:

The Arrow range comprises three lightweight, easy-to-read compasses, with fast needles, developed for competitive orienteering.

Designed to be read clearly and quickly, the Arrow-6, Arrow-20 and Arrow-30 models boast features that enable athletes to compete to the very limit of their capabilities.

These lightweight, ergonomically designed instruments feature durable, water-resistant printing so you can always rely on your readings.

Field compasses in general:

Mechanical compasses have been working as the navigator since several thousands of years.

Still today magnetic compass is environmentally friendly, cheap and the most reliable tool when choosing the course.

The oldest Suunto field compasses, which are still in use, are manufactured in 1938. A high quality field compass hardly needs any other service than washing in fresh water from time to time.

The compass works without any external power supply. The compass gets its power from nature - from the magnetic north pole.

COMPASS BALANCING

Two Geographical Balancing Zones:

The vertical intensity and direction of the earths magnetic field, the inclination, influences the horizontal plane of a compass needle according to the latitude where it is used.

Due to inclination, compasses must be balanced for different geographical zones in order to keep the needle in a horizontal position.

Previously, the globe was divided into five different balance zones in which specific compasses functioned.

However, as people travel more and more, the need for a compass with a greater geographical range has increased.

Thanks to Suuntos Two Zone System there are only two balance zones to consider in compass use - the northern hemisphere and the southern hemisphere.

In practice, this means that a Suunto compass designed for the northern hemisphere will still work for a fair distance into the southern hemisphere, and vice-versa.