Confirming Fried Chicken is completely cooked
While not specifically an answer to your measurement question, you might consider cooking your chicken low-temp (sous vide) to ensure optimal doneness, then just quickly deep fry for crust formation.  That would guarantee safety and specific temp. for specific parts of the bird.  See here, for example:  http://www.chefsteps.com/activities/sous-vide-fried-chicken