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.
The per day cost of tickets decreases if you purchase multi-Days. The most significant cost break occurs when you purchase a 4-Day or higher Disney World ticket. All Disney tickets expire 14 days after first use. *NOTE: All Disney ticket media for the Theme Parks require that the Ticket Tag (finger scan) system be used for both entry and re-entry. This includes any tickets issued prior the Magic Your Way program, such as Park Hopper Passes.