The silva ranger s is fitted with a mirror sighting case for extremely precise bearings and landmark identification the baseplate measures mm 125k and 150k scales and has a declination scale to adjust for true north features a quality compass for any outdoor activity where precise direction is required easy to operate dryflex grip fitted to the bezel by day or night luminous markings glow in the dark sighting mirror with 45 degree angle assistance scales mm 125000 and 150000