Lewis, A J; Coveney, T J (2026) Angles in the SI—a practical dimensional metrologist viewpoint *. Metrologia, 63 (2). 023002 ISSN 0026-1394

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Abstract

The International System units of plane angle (radian) and solid angle (steradian) have been the subject of much international debate and discussion, stretching back over several decades. This letter presents the viewpoint from practising dimensional metrologists for whom the realisation of angular units is their responsibility.

Item Type:	Article
Keywords:	Angles, SI, radian, dimensions, metrology
Subjects:	Engineering Measurements > Dimensional
Divisions:	Materials and Mechanical Metrology
Identification number/DOI:	10.1088/1681-7575/ae3dee
Last Modified:	18 Sep 2026 14:27
URI:	https://eprintspublications.npl.co.uk/id/eprint/10540