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Dimensional measuring instruments technical document

Proposed amendments to the dimensional measuring instruments technical working document.

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The National Measurement and Regulation Office (NMRO) is looking for any further views from the UK in relation to an amendment to an International Organization of Legal Metrology (OIML) technical working document for dimensional measuring instruments (R129). The UK views will then be sent to the Australian secretariat of OIML TC7/SC5.

The NMRO is the UK participating member of R129 and is responsible for collecting the UK views on proposed amendments to the technical working document for dimensional measuring instruments.

The changes to the draft are as follows:

  • layout of the document updated in line with the draft general requirements for measuring instruments - environmental conditions (OIML D11) (2013)
  • surge tests added to the document consistent with draft OIML D11 (2013)
  • the minimum dimension amended to 10d from 5d
  • test procedures revised to be consistent with draft OIML D11 (2013) document
  • uncertainty associated with error in the indication of measurement - please refer to Secretariat’s note at the end of clause 4.1.6(a)

Read the proposed draft document for R129 (PDF, 1.44MB, 101 pages) .

Read the secretariat response to the previous version of R129 (MS Word Document, 59.6KB) .

Download the UK comments form (MS Word Document, 21.4KB) and return by 14 August 2015.

For further information then please contact:

Morayo Awosola
International legal metrology
Tel: 020 8943 7287

For more general information about the work of NMRO on international legal metrology then read our international guidance page.

Notes: OIML is an intergovernmental treaty organisation which:

  • develops model regulations, standards and related documents for use by legal metrology authorities and industry
  • provides mutual recognition systems which reduce trade barriers and costs in a global market
  • represents the interests of the legal metrology community within international organizations and forums concerned with metrology, standardization, testing, certification and accreditation
  • promotes and facilitates the exchange of knowledge and competencies within the legal metrology community worldwide
  • cooperates with other metrology bodies to raise awareness of the contribution that a sound legal metrology infrastructure can make to a modern economy
Published 2 June 2015