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Title: Petzval portrait type doublet lens [Go to resource]
Description: Petzval portrait type doublet lens F.4, 8 inch f.l. with Waterhouse stops and rack and pinion focusing. C Burr, c.1880 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: lens Source: Science Museum Creator: C. Burr Identifier: 1979-559/1420 Go to resource More Like this...
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