Brand: Thornton / Blundell Model: 800 Series Type: Engineering slide rule Material: Plastic/acetate rule with cursor Colour: White rule, tan ends, clear cursor Includes: Original case + Academy instruction leaflet This is a vintage British Thornton Blundell 800 Series engineering slide rule, complete with its original hard case and Blundell Academy instruction leaflet. These slide rules are well regarded for their precision and are popular with collectors of engineering and technical instruments. The rule shows light cosmetic wear from age and use, but there are no structural defects, and the cursor slides correctly. Scales remain clear and legible. Includes: • Thornton/Blundell 800 Series slide rule • Clear sliding cursor • Hard protective case • Blundell Academy instruction leaflet A great addition for collectors of vintage engineering tools, calculators or technical drawing equipment.