The Trekker is light wieght and has a 4-position positive stop mirror with vee notch. The rotating capsule has a sure-grip dial, a red orienting arrow and declination scale. Other features include inch and millimeter rules on a clear base plate for easy mapping and plotting. Features 2.25" X 3.3125" 1.5 OZ
From the Manufacturer
The Silva Trekker provides a compact sighting mirror ideal for use in the outdoors when targeting far off land marks for navigation.