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Fournet's Refractometer
OPTOMETRIC INSTRUMENTS
refractometer; optometer
Frankham
Europe: United Kingdom, England, London
c.1883
metal; brass; glass
1999.335
OPTOMETRIC INSTRUMENTS
refractometer; optometer
Frankham
Europe: United Kingdom, England, London
c.1883
metal; brass; glass
Refractometer consisting of two 32-lens discs fixed in parallel on a brass stem intended for suspension from a chair-mounted bracket. Alternative apertures for scales for left or right eye.
1999.335