The Spike Jet is the most compact model in the Spike Jet series with a smaller baseplate, smaller capsule and less details. Everything to keep the compass as clean and lightweight as possible. The rotatable housing has extended orienteering lines, a grip friendly surface and provides easy navigation with the Silva 1-2-3 System. The baseplate has a measuring scale at the tip that helps you measure the exact distance between two places on the map. This way you can more easily plan your race.,