Optical equipment, lens, concave, in storage box, glass / metal / cardboard, made by Flavelle Bros, Sydney, New South Wales, Australia, date [1890-1920], used at Sydney Observatory, Sydney, New South Wales, Australia, [1890-1920] A circular glass concave lens fixed in a metal mount with screw threads around its circumference. The lens is stored in a cardboard box with a removable lid.
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(Accession num: H10291)
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