The difference in size between narrow and wide bar is 1/13, by standard it can be from 1/2 to 1/5. The codes definitely broke: ISO/IEC 15416 Bar code print quality test specification — Linear symbols specification.
ISO/IEC 16390 " Information technology — Automatic identification and data capture techniques — Interleaved 2 of 5 bar code symbology specification"
4.4 Dimensions
wide/narrow ratio(N): 2,0:1 to 3,0:1