Strutt’s North Mill was the most technologically advanced building when built to William Strutt’s ‘fire-proof’ design in 1804. The museum displays the evolution of cotton spinning from cottage industry to factory system through original and replica machinery. Drop spindle to Crompton’s mule. Our famous silk and cotton hosiery collection shows fine examples of chevening (local hand embroidery on stockings) and the knitting machinery depicts the changes in this industry through the ages. See now a framework knitting machine with the famous "Derby Rib" attachment.