The silva race 360 jet thumb compass offers outstanding quality needle settling time and stability making this compact compass that has an ergonomic thumb design and 360 turnable capsule ideal for if you are orienteering and adventure racing the needle on this race 360 jet thumb compass has more transparency to give you better map visibility and the thicker baseplate is incredibly durable and has a new ergonomic design which helps to get better contact between your thumb and your map with the ad