Catalogue number #1305693072
Rare 'Grid Iron' sliderule designed by Major General Hannyington c. 1884 made by Aston & Manders 1917 Ltd. London. Formally owned by the London School of Economics given as a retirement present. (see photo of the dedication note on the rear) Condition: near perfect two small pieces of veneer missing from opposite ends of the bottom edge - see photos. Size 32" (81 cm) x 8" (20 cm)
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