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COMPOUND BAR-LIMB MICROSCOPE WITH A 'CAPTAIN PERRY' ARM

MAKER:SWIFT

MODEL: 'PRESENTATION MICROSCOPE'

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c.1877

SIGNED: 'JAMES SWIFT, 43 UNIVERSITY ST, LONDON W.C. PATENT'


swiftpres

darkwell and Lieberkuhn

Lieberkuhn The Lieberkuhn reflector fits any of the three lowest power objectives. It could be used to illuminate any of the darkwells or to view any small opaque object. For larger opaque objects, the Lieberkuhn cannot be used because the object would block the substage light rays, preventing them from reaching the Lieberkuhn. They would need to be illuminated by the side reflector, or one of the bullseye condensers.