The Silva Expedition 4 is a baseplate compass with almost everything. Magnifier, millimetre and inch scales. Romer scales: 1:63.360 1:50.000 1:25.000.
It is a compass with extra functionality for GPS users.
The "full-size" base plate compass for experienced navigators.
Used by different defense forces around the world.
1:25k, 1:50k, 1:63.36k, mm and inch map measuring scales.
Luminous points for navigation in the dark.