The Suunto KB-20 is a floating hand-bearing compass that weights only 40 g. It is an ideal instrument for marine, professional and outdoor use. The Suunto KB-20 has an accuracy of 1 degree, the graduation interval is 1° and it has reverse scale. The capsule is covered with a floating, shock-resistant plastic housing which is yellow to allow it to be easily spotted if dropped. The KB - 20 is fully waterproof and is therefore not only suitable for use by professional navigators & geologists but those who take part in water sports, and commercial fishing. Apart from simply reading the compass readings from the top of the instrument, the side houses a parallax free lens which you can peer through to get a highly accurate directional reading in degree bearings.