The Silva Mini Is Perfect To Bring As An Extra Compass, It Is Super Lightweight And Takes Up Minimum Space. It Can Be Attached To Your Jacket With A Safety Pin, Thereby Allowing Hands Free Navigation. A Mirror Sighting Compass Should Be Your Choice When You Must Determine Direction Over Long Distances. With The Mirror Tilted To A 45 Degree Angle, You Can Check Your Direction By Looking At The Bezel In The Mirror While Sighting In The Correct Direction Of Travel. Because You Needn*t Lift Your Eyes From The Compass In Order To Look Into The Terrain, The Direction Determined With The Silva 1 2 3 System? Becomes More Accurate. The Base Plate Offers Map Measuring In Inches And A Built In Sundial That Lets You Determine The Time Of Day By Using The Apparent Position Of The Sun. The Red/Black North South Lines In The Capsule Bottom Ensures Easy And Safe Settling. The Compass Needle Is Made From Finest Swedish Steel With High Quality Magnetic Features.