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Accessories for Ruka Variator
OPTOMETRIC INSTRUMENTS
accessory
Runge & Kaulfuss (Rathenow)
Europe: Germany, Brandenburg, Rathenow
c.1932
metal; glass; wood
overall (case): 37 mm x 200 mm x 102 mm
2011.657
OPTOMETRIC INSTRUMENTS
accessory
Runge & Kaulfuss (Rathenow)
Europe: Germany, Brandenburg, Rathenow
c.1932
metal; glass; wood
overall (case): 37 mm x 200 mm x 102 mm
Set of ten auxiliary lenses for a refracting unit including a stenopaeic slit and pinhole. Presented in a compartmentalised hinged wooden case with brass hook clasp and darl blue velvet lining to lid.
2011.657
Gift of the Marton Library Trust, 2011