----------------------------Original message----------------------------
Dear Chuck
 
Yes you are probably correct.
 
By the time Arrowsmith was producing his maps the English Mile or British
Mile had become more or less standard at 69.1 English Miles to 1 degree but
it is interesting that British Miles is rarer.
 
Arrowsmiths own two sets of county maps (before 1837) are at scales of a)
Scale of English Statute Miles Nine=One Inch and b) no scale.
 
Hope this helps -it might at least spur someone to contradict me!
 
Kit