The X-dimension is the width of the smallest element in a PDF417 bar code.
The X dimension is measured in Mils, 1 Mil = 1/1000 Inch.
Very often barcode parameters are specified in Mils in various standards. But they can be
also specified in inches and in millimeters. To switch from one unit to another, the
following ratios can be used:
1 Mils = 0.001 Inch
1 Inch = 25.4 MM
Below is a chart that contains many common dimensions.
| Mils |
Inches |
Millimeters |
| 4 |
0.004 |
0.1016 |
| 6 |
0.006 |
0.1524 |
| 8 |
0.008 |
0.2032 |
| 10 |
0.01 |
0.254 |
| 12 |
0.012 |
0.3048 |
| 14 |
0.014 |
0.3556 |
| 20 |
0.02 |
0.508 |
| 40 |
0.04 |
1.016 |
| 75 |
0.75 |
19.05 |
| 125 |
1.25 |
31.75 |
|
What is a PDF417 X-dimension