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Title: brass mounted Rectigraph symmetrical lens [Go to resource]
Description: brass mounted Rectigraph symmetrical lens F.8 11 inch f.l fitted with patent ring-type of diaphragm with engraved exposure table. Lancaster c.1885. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: symmetrical lens Temporal: c.1885 Source: Science Museum Creator: J. Lancaster & Son Identifier: 1979-559/1189 Go to resource More Like this...
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