Precise pocket compass with NdFeB rear earth magnet and sapphire jewel bearing * Azimuth and vertical angle (+/- 90 percent) readings are accurate to +/- 1/2 degree * Color-impregnated composite body material; precision-aligned mirror with "see-through" sighting * Magnetic declination adjustment allows for east or west declination settings to 180 degrees * This item is not for sale in Catalina Island