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Title: Brass mounted symmetrical lens [Go to resource]
Description: Brass mounted symmetrical lens F.8 11 inch f.l with a ring iris diaphragm. Thornton Pickard, c 1910. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: symmetrical lens Temporal: 1905-1915 Source: Science Museum Creator: Thornton Pickard Manufacturing Co. Identifier: 1979-559/1156 Go to resource More Like this...
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