The Silva Expedition 4 compass with almost everything. Magnifier, millimetre and inch scales. Romer scales: 1:40.000 1:50.000 1:25.000. A compass with extra functionality for GPS users.
Sapphire jewel bearing for friction free movement of the compass needle
Durable hot-stamping of scales/graduations
Compass housing made from Dryflex™
Luminous stripe on the needle
Patented red/black orienting lines inside the compass housing
Map measuring scales mm, 1:50k and 1:25k
Declination scale inside the capsule
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