◣◢◥◤◣◢◥◤Instructions◣◢◥◤◣◢◥◤ Adjust the fins by clicking [Stop] , and then you can rotate them all around. When you're ready, click [Go] to see if your adjusted fins are touching. ◣◢◥◤◣◢◥◤◣◢◥◤◣◢◥◤◣◢◥◤◣◢◥◤◣◢◥◤ To adjust the speed, move the slider {Speed both} to a different number. Default is 30. The higher the number, the faster they (the fins) spin! But the less, the slower.
