 
              Lens Testing Chart (distortion)
              Image: 8 x 4 1/2 in. (20.3 x 11.4 cm)
Paper: 8 1/2 x 5 1/8 in. (21.6 x 13 cm)
          Paper: 8 1/2 x 5 1/8 in. (21.6 x 13 cm)
Credit Line
              Bequest of Wilma Wilcox, 1993
        
          
            Accession No.
            13843.1993                                
          
        
       
        