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Freeman Archer Subjective Unit (Early model)
TEST CHARTS
Landolt ring chart
R. Archer & Sons Ltd
Europe: United Kingdom, England, London
c.1950
?; wood
1999.143
TEST CHARTS
Landolt ring chart
R. Archer & Sons Ltd
Europe: United Kingdom, England, London
c.1950
?; wood
Eyechart. Back-illuminated translucent surface bearing eight sizes of Landolt rings. Includes red and blue filters. Wall-mountable in white wooden frame.
1999.143
Gift of Mr Philip Freeman, FCOptom, 1999