A series of copied handwritten and typed lists of mill engines along with copies of earlier entries from a ledger entitled "Constants" and "Nominals" related to mills previously owned by the Lancashire Cotton Corporation (LCC) and Fine Spinners and Doublers (FSD).

The modern lists contains the following details; name of mill; maker of engine; date; type of engine; general dimensions; pressure; fly wheel dimensions and rpm. The copied ledger contains further details; LAN; Constant; cylinder diameter and surface area. All lists have handwritten amendments added.