This invention relates to a process for making at least one nanotube between two electrically conducting elements located on a substrate, the said process using microwave power in a deposition chamber, a gas containing organic molecules injected at low pressure inside the deposition chamber. Tolerance levels associated with such profiles and tolerance levels associated with biphasic profiles are shown not to be statistically different. An actual torque which acts on the wheel suspension system is preferably determined on the basis of the differences between the spring travel values. A bowl guard support is at an underside of the head portion. The modified information is compared with the isolated information and a set of changes is extracted from the comparison.