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Pulzone-Hardy Rule and case
OPTOMETRIC INSTRUMENTS
pupillometer; case
Europe: United Kingdom
1930s?
brass; metal; leather
instrument: 22 x 190 mm; case: 40 x 197 mm
2016.1011
OPTOMETRIC INSTRUMENTS
pupillometer; case
Europe: United Kingdom
1930s?
brass; metal; leather
instrument: 22 x 190 mm; case: 40 x 197 mm
Pupillary distance gauge. Black-painted brass. Triangular-shaped nasal notch between two shuttered apertures. Vertical wires on ends of each sliding shutter. Leather case with press stud fastener.
2016.1011
Gift of Mr John Dixon Salt FCOptom, 2016