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Title: Ross Concentric Lens [Go to resource]
Description: Lens with aperture stop wheel, No. 51770. F.16 15 inch f.l. Lens consists of two achromatic doublets. Maximum aperture at which it could be used was F.16. Ross, c.1900 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: concentric lens Temporal: 1895-1905 Source: Science Museum Creator: Ross Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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