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Title: brass mounted Achromatic landscape lens [Go to resource]
Description: brass mounted Achromatic landscape lens with effective aperture F.12 9.5 inch f.l with patent iris diaphragm. Lancaster, c.1885. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: lens Temporal: c.1885 Source: Science Museum Creator: J. Lancaster & Son Identifier: 1979-559/1169 Go to resource More Like this...
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