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Keeler 'A' Series Word-Chart
TEST CHARTS
near vision test
Keeler
Europe: United Kingdom
1958
cardboard
2003.313
TEST CHARTS
near vision test
Keeler
Europe: United Kingdom
1958
cardboard
Two-piece (four-sided) spiral bound reading test chart on white board. Sizes featured: A20=18X=76D, A19=15X=60D, A18=12X=48D, A17=10X=40D, A16=8X=32D, A15=6X=24D, A14=5X=20D, A13=4X=16D.
2003.313
Ex Keeler Collection