Telescope eyepieces (2), Huygens, metal / glass, made by Carl Zeiss, Jena, Germany, [1890-1920], used by Sydney Observatory, New South Wales, Australia, [1890-1920] Two orthoscopic eyepieces for a telescope tube 35mm in diameter. Each eyepiece can be unscrewed into four pieces, a metal tube, two lenses and an aperture. They each have different focal lengths, 12.5mm and 9mm. Observatory stock number 96
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(Accession num: H10288)
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