Url Creator Date Created Description Format Identifier Publisher Associated person or organisation Associated place or event Rights Attribution Place created Subject Place name Type https://www.explore.saltairecollection.org/s/p/item/16173 Knight & Forster Ltd 20th century, early to mid A red and cream bakelite circle with an inner circle which can be moved. Made by Knight & Forster Ltd Bradford. The circle relates to textile measurements plastic 2025.90 Salts (Saltaire) Ltd. No copyright restrictions. Please acknowledge the work's author (if known) and the item's source Mill machinery and processes | Textile industry The Bradford Calculator object