|Overall Size||4.0 in. x 4.0 in. - 101.6mm x 101.6mm|
|Symbol Type||SYMBOL CONTRAST|
|Symbol Size||100% Nominal X-dimension in 13 mil (0.33mm)|
|UPC Number||0 1234567890 5|
|Effective Aperture||6 mil (0.006 In.)|
The Contrast Symbol Grade cards are offered in Grades A,B,C,D,F (4,3,2,1,0) of contrast for use in testing bar code verifiers. Each symbol is individually calibrated to ANSI X3.182/ISO 15416 standards using a custom built microdensitometer. The images are precisely created in photo-emulsion. The reflectance of both the bars and the background are modified. Each card is individually serialized, major values are marked on the card, and all values are included in a written report.