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.
With the Magic Your Way Park Hopper Ticket come and go as you please through all four Walt Disney World Theme Parks on the same day for each day of your ticket with the Park Hopper Option. This ticket expires 14 days from first date of use. All Tickets are 100% RFID, FastPass+ Enabled.