deanna - are you sure your letters are right? found this info Length:
Inch [2.54 cm]
Link = 7.92 inches (see Chain for explanation)
Foot = 12 inches [30.48 cm]
Yard = 3 feet [91.44 cm]
Rod, Pole or Perch = 25 links = 5� yards [about 5 metres]
Chain = 22 yards = 66 feet = 100 Links [length of a cricket wicket, about 20 metres]
Furlong = 10 chains = 220 yards [length of a furrow, about 200 metres]
Mile = 8 furlongs = 1760 yards = 5280 feet [a thousand Roman paces? ' about 1600 metres]
on this site:
http://www.johnowensmith.co.uk/histdate/measures.h
tm
Doesn't
seem to either fit or appear as 75 feet. Sorry ;+)