Item typeArchiveInventory No16946Related ItemsMore related itemsNicol Prism in Case, by C. D. Ahrens, London, 1885Inventory Number 24182Nicol Prism, Possibly by William Nicol, Edinburgh, Early 19th CenturyInventory Number 21074Mounted Calcite Prism, by C. D. Ahrens, LondonInventory Number 29589Ahrens Triple Prism in Can, c. 1886Inventory Number 15633
