It's a true story (60's - 70's of course) - but you haven't explained it fully! The, no doubt, imperial box of matches was 30nm x 20nm x 10 nm on the WAC chart. 1:60 was an art form then!! Most GA ADF's were only good for 60 nm and there were about 9 VOR's in the country. DME was only in the hands of the Gods of RPT!! Dubbo to Roma and back, rhumb-line, mostly in the dark both ways NVMC seemed do-able then??