APRís Time/Speed/Distance keychain computer really works! And weíre not just talking about holding your keys!
APR has created a miniature Time/Speed/Distance computer that is completely accurate and fully functional. The computerís top dial rotates to show speed, time to the fix, knots or miles to go, and fuel problem solutions.
And thereís more... In case you donít complete your flight plan before take off, you can safely and easily use the back side of the keychain computer to guide you through the required sequence once youíre en route. PVC plastic. 1 1/2Ē Dia.