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acrylic prints device acrylic prints telescope acrylic prints 1685 acrylic prints apparatus acrylic prints archival acrylic prints chamber acrylic prints engraving acrylic prints german acrylic prints granger acrylic prints historical acrylic prints historic acrylic prints illustration acrylic prints image acrylic prints images acrylic prints interior acrylic prints

drawings device drawings telescope drawings 1685 drawings apparatus drawings archival drawings chamber drawings engraving drawings german drawings granger drawings historical drawings historic drawings illustration drawings image drawings images drawings interior drawings

ZAHN: TELESCOPIC LENS.
Chamber containing a wall-mounted telescopic lens, from Johann Zahn's 'Oculus artificialis.' Engraving, 1685-1686.

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