This is considered by many as top of the Silva range of traditional base plate designed compasses. It has a precision sighting system, which allows for bearings accurate to +/- 0.5 degrees to be taken! Rubber feet on the baseplate and millimetre and inch scales. Romer scales: 1:63.360 1:50.000 and 1:25.000. For reading in the dark, a luminous compund activated by daylight, flashlight etc., will give light up to 8 hours. A top-of-the-range compass for the advanced user!