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An intercomparison of high-accuracy roundness measurements has been carried out with the participation of the national standards laboratories of ten European countries. The circulated artefacts were a hemispherical glass standard and a steel disc. A total of eight roundness profiles were examined, 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 evaluated. The overall results show a satisfying agreement for almost all laboratories. The uncertainty limit was mainly due to the spindle errors of the roundness instruments used in each laboratory.

Additional information

Authors: SACCONI A, Istituto di Metrologia 'G. Colonnetti', IMGC, Torino (IT);PASIN W, Istituto di Metrologia 'G. Colonnetti', IMGC, Torino (IT)
Bibliographic Reference: Article: Measurement, Vol. 13 (1994) pp. 119-128
Record Number: 199410530 / Last updated on: 1994-11-28
Original language: en
Available languages: en