AA 010 Comprehensive slide rule by British Thornton 1974, with plastic carry case, presentation box and instruction leaflet AA 010 Comprehensive slide rule by British Thornton, with case, instructions and presentation box 1974
British Thornton AD 150 Advanced (10-inch) slide rule by British Thornton Limited with plastic case British Thornton AD 150 Advanced slide rule 1970-1975
British Thornton AD 160 (10-inch) slide rule by British Thornton Limited with plastic case Slide rule 1970-1975
British Thornton P.I.C. No.P271 Student Log-Log (10-inch) slide rule by British Thornton Limited with plastic case British Thornton P.I.C. No.P271 Student Log-Log slide rule 1965-1975