Silva Field 7 Compass

Probably the world's best selling compass. Fantastically simple to use and a perfect compass for land navigation. Soft, easy-grip compass housing in Dryflex(TM). Map measuring scales in millimetres, 1:50.000 and 1:25.000.

• Sapphire jewel bearing for friction free movement of the compass needle
• Durable hot-stamping of scales/graduations
• Compass housing made from
• Dryflex(TM) Rounded base plate
• Patented red/black orienting lines inside the compass housing
• Map measuring scales: mm, 1:50k and 1:25k
• Declination scale inside the capsule
• Technologies : The Silva 1-2-3 System

The easiest way to set a course towards the lake is with a simple and safe system used by expeditions, youth organisations, mountain guides, armies, orienteers and other navigators the world over: the Silva 1-2-3 System(R)

• Place the compass on the map with the edge of the compass along the desired line of travel. Make sure Direction of Travel arrow points towards your destination.
• Rotate the compass housing until N on the dial points North on the map. Check that the compass housing red/black North/South lines are parallel with the map's meridians.
• Hold the compass in hand and turn your body until the red end of the compass needle (North) coincides with the red arrow in the bottom of the compass housing. The front of the compass with the direction of travel arrow is now pointing towards your destination.

NOTE: If using a mirror-sighting compass: angle the mirror/lid approximately 45 degrees towards yourself and hold with straight arm out in front of you. Now, while looking in the mirror to see that the needle aligns with the red/black N/S arrow, sight above the mirror (using the sight) towards an object in the field in line with the direction of travel.

Magnetic declination and how to compensate for it.

The difference, between Geographic North (North/South map

meridians) and Magnetic North (where the North end of t...