Case and instructions for comprehensive slide rule
Plastic carry case, presentation box with instruction leaflet for AA 010 Comprehensive slide rule by British Thornton 1974
AA 010 Comprehensive slide rule by British Thornton 1974, with plastic carry case, presentation box and instruction leaflet
Plastic carry case, presentation box with instruction leaflet for AA 010 Comprehensive slide rule by British Thornton 1974
AA 010 Comprehensive slide rule by British Thornton 1974.