Methods for the assessment of departure from roundness — Measurement by two- and three-point methods

Determines the out-of-roundness by means of two-point measurement (measurement of diameters), by means of three-point measurement, summit (symmetrical or asymmetrical setting), and by means of three-point measurement, rider (symmetrical setting). Suitable for routine or in-process inspection because of the methods specified in ISO 4292 are faster and cheaper (than the procedure in ISO 4291).