270, ki označuje dolžino palcev, pretvorjena v metrično dolžino, je 2702.54=685.8 mm;
- H, is the model of the timing belt, indicating that the pitch is 12.7mm (the example of the opening of teeth and teeth is called "pitch");
- 100 pomeni, da je širina palcev, pretvorjena v metrično širino, 1000.254=25.4 mm;





