Great article John--enjoyed the read, and in a sense, a look back into the world of the later 1970's.
Back in 1977, I would often see this older guy at the range, shooting his wildcats--he was a dedicated looney.
He always had the "ancient" unit along, and one day he asked me, "Do you know what that is??? It's a CHRONOGRAPH !"
He spoke about it in near mystical tones, as if he had the secrets of atomic energy at his disposal within that device....