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Wisconsin Department of Revenue

 WT-7 Bar Code Specifications

  1. 3 of 9 format.
  2. Wide to narrow ratio of 3:1.
  3. Narrow bar width at least 10 mils.
  4. Minimum height of 1/2 inch.
  5. At least 1/4 inch white space to left and right of bar code.
  6. Eleven characters as follows -
Digit # Interpretation
1. Start.
2. W = WT-7
3. Page number.
4-5. Form code (Mainframe processing codes are 0 (zero) plus 1 digit).
WT-7 = 07    
6-7. The last two digits of the year 2007.
8-9. Vendor number must be assigned by the Wisconsin Department of Revenue.
10. Version number. Original version is 0. The version number will change only when the format for variable information changes and the previous format gives inaccurate information for computer processing, that format will be deleted from the memory of the scanner and the version number will be reused for the replacement format.
11. End.

Last updated November 27, 2007