X Dimension |
When talking about barcodes, the X dimension refers to the width of the narrowest unit in a barcode. A single X dimension is commonly referred to as a "module". Wider elements in the barcode (typically, bars or spaces in the barcode) are then measured as multiples of the X dimension. Therefore, the X dimension correlates directly with the overall width of the barcode. The X dimension is measured in units of mils, where 1 mil equals 0.001 inch. Therefore, an X dimension of 7.5 mils is 0.0075 inches.
The X dimension is used to determine the density of a barcode, which defines how many characters can be encoded per inch of barcode. When you decrease a barcode's X dimension, you increase its density; furthermore, if you increase the X dimension, you effectively decrease its density.
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