 
              Lens Testing Chart (distorton)
              Image: 8 x 5 1/2 in. (20.3 x 14 cm)
Paper: 10 x 8 1/8 in. (25.4 x 20.6 cm)
          Paper: 10 x 8 1/8 in. (25.4 x 20.6 cm)
Credit Line
              Bequest of Wilma Wilcox, 1993
        
          
            Accession No.
            13872.1993                                
          
        
       
        