COMPOUND BAR-LIMB MICROSCOPE WITH A 'CAPTAIN PERRY' ARM
MAKER:SWIFT
MODEL: 'PRESENTATION MICROSCOPE'
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c.1877
THE SWIFT 'MINERAL' STAGE FORCEPS
The three-pronged or 'Mineral' forceps provides for holding hard or irregularly-shaped objects. It can be attached to either one of the holes on the sides of stage top plate, or to the hole on either side of the limb.
The forceps can be opened by pushing the triangular piece furthest from the points forward, or closed by pulling it backwards. Hard small objects are better held by a small 'stage vice'.