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Pelli-Robson Contrast Sensitivity Chart 7002250
TEST CHARTS
contrast test
Metropia Ltd; Clement Clarke; Haag-Streit International
Europe: United Kingdom, England, Essex, Harlow
1988
card; plastic
overall: 840 mm x 593 mm
2020.262
TEST CHARTS
contrast test
Metropia Ltd; Clement Clarke; Haag-Streit International
Europe: United Kingdom, England, Essex, Harlow
1988
card; plastic
overall: 840 mm x 593 mm
Large stiffened card chart for testing contrast sensitivity using test letter types, with white plastic upper and lower hanging rods (two copies, identical apart from different sets of letters). Blank on reverse.
2020.262
Gift of Mr John Dixon Salt FCOptom, 2020