Eyepieces (3), for 35mm diameter telescope, metal / glass, made by Carl Zeiss, Jena Germany, 1890-1920, used at Sydney Observatory, Australia Three 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, 18mm, 12.5mm and 9mm.
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(Accession num: H10289)
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