270, kas norāda collu garumu, pārvēršot metriskajos garumos, ir 2702.54=685.8mm;
- 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 nozīmē, ka platums collas, pārvēršot metriskajā platumā, ir 1000.{2}}.4 mm;
