In simple terms, a claw pole is a fist-sized piece of metal with six or eight hooked teeth pointing upwards and a hole in the middle. It is a key component of alternators, i.e. generators, which supply practically every motorized vehicle with power. Unfortunately, there is hardly a straight surface, barely a symmetrical tooth, rarely a perpendicular edge. A challenge for quality inspection: up to 10 different gauges were used in the past. Random measurements were time consuming and susceptible to errors. The greatest problem became obvious with the latest claw pole generation developed at Bosch, which will deliver up to 30 percent more power: the parts are shaped so that many features cannot even be inspected with manual measuring equipment.