I think I read somewhere that Feynman once said that if we could measure the earth’s diameter, it would be maybe an inch short of what we would expect from the circumference and Euclid. Is that correct? (Did he actually say that?) It seems to me that it would be a tad longer?? I see a clock lower than me running slower than my clock. So in 10 seconds, it measures or indicates only 9 seconds say. Since the metric matrix coefficient of the radial coordinate is the reciprocal of the time coefficient, then wouldn’t a (radially oriented) 10 inch ruler below me measure or indicate say 11 inches? I can watch clocks measure time from a distance, but how do you compare distances from a distance?