The term chain in this case usually refers to the measuring instrument rather than a unit of length; the distances measured with such an instrument are normally measured in feet (and usually decimal fractions of a foot, not inches).
Messages: 7,549. Likes Received: 4,600. For the record, Disney did try to sell lifetime passes at the Magic Kingdom the first year it was open (1971) called a Gold Pass for $100. This pass was said to be good for a lifetime and for any additional parks that they may add in the future.
Currently the minimum number of Disney timeshare points you must purchase in order to become a member is 160 and the maximum number you are permitted to own is 2000. The time of year you originally purchase your Disney Vacation Club timeshare becomes your personal timeshare calendar.