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Von Graefe Thread Optometer
OPTOMETRIC INSTRUMENTS
optometer
Europe:
Post 1855
metal; wood
overall: 157 mm x 29 mm

Optometer comprising a black-painted metal head and stem, featuring a rectangular aperture across which are strung four wire threads. Turned wooden handle.


2016.974

Transferred from the former Museum and Library of Optometry, Aston University / Gift of the family of the late Anthony G. Sabell FCOptom, 2016



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