After refuelling an FG1 from the mighty Vickers FunBus, we would always offer the F-4 mates a Lat/Long update...
I would ask the food-powered universal navigation system in the back left corner of the flight deck to put the figures up on the Carousel, then pass them to the F-4 nav....having added a second decimal place to really p*ss him off
They never did find out!