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An intercomparison of high accuracy roundness measurements was carried out. The circulated artefacts were a hemispherical glass standard, with nominal roundness deviation of 0.04 microns, and a steel disc with nominal roundness deviations of 0.1 and 0.4 microns. The exercise involved the measurement of eight roundness profiles, two on the hemisphere and six on the disc. The eccentricity between external and internal surfaces of the disc was determined, and the effect of various measuring conditions was evaluated.

Additional information

Authors: SACCONI A, Istituto di Metrologia "G. Colonnetti", Torino (IT)
Bibliographic Reference: EUR 14662 EN (1993) 34 pp., MF, ECU 4
Availability: (2)
Record Number: 199310553 / Last updated on: 1994-11-29
Original language: en
Available languages: en