Weights and Measures (National Standards) Regulations (Amendment)

Legislation au C2004L00593 Regulations Not in force Legislative Instrument

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EXPLANATORY STATEMENT

STATUTORY RULES 1984 No. 195

Issued by the authority of the Minister for Science and Technology

WEIGHTS AND MEASURES (NATIONAL STANDARDS) ACT 1960 REGULATIONS

Section 20 of the Weights and Measures (National Standards) Act 1960 (the Act) provides that the Governor-General may make regulations prescribing all matters required or permitted by the Act to be prescribed, or which are necessary or convenient to be prescribed for carrying out or giving effect to the Act.

Regulation 5 of the Weights and Measures (National Standards) Regulations currently provides that:

“The metre is the length equal to 1650 763-73 wave lengths in vacuum of the radiation corresponding to the transition between the levels 2p10 and 5d5 of the Krypton - 86 atom”.

The Statutory Rule provides for the amendment of Regulation 5 by altering the definition of a metre to the following:

“The metre is the length of the path travelled by light in a vacuum during a time interval of 1/299 792 458 of a second”.

This follows a recommendation by the National Standards Commission that the Commonwealth Weights and Measures (National Standards) Regulations be amended to incorporate a definition agreed to in Paris on 20 October 1983 by the 17th General Conference of Weights and Measures.

The length of the newly defined metre will not be detectably different from that of the previous metre. Consequently the new definition will not necessitate any change to existing practices in everyday measurement.

 

 

 

 

 

 

 

 

 

 

Overview

The Weights and Measures (National Standards) Regulations 1960 were amended in 1984 to align with international standards for the definition of a metre. This change was enacted pursuant to the Weights and Measures (National Standards) Act 1960, a piece of legislation that governs national standards for weights and measures in Australia. The regulation update was introduced to address the need for consistency and uniformity in measurement standards across the globe. The policy objective was to modernise Australia's measurement standards by adopting the definition of a metre as agreed upon by the international community during the 17th General Conference of Weights and Measures, held in Paris on 20 October 1983. This amendment ensures that Australia's national standards remain consistent with global practices, thereby facilitating trade and ensuring precision in measurement. The change in definition does not impact everyday measurement practices, as the length of the metre remains effectively unchanged.

Scope and Application

The Weights and Measures (National Standards) Act 1960 Regulations pertain to the specification of national standards for weights and measures in Australia. These regulations apply to all persons and entities engaged in trade, commerce, and industry within Australia, ensuring uniformity and accuracy in measurements across various sectors. The scope of the Act extends across the Commonwealth, thereby encompassing all states and territories of Australia. The Act does not explicitly state exclusions or exemptions, suggesting a broad application to all measurable transactions and instruments used in trade and commerce. The Act's application can be further extended or restricted through subordinate instruments, as outlined in Section 20, which empowers the Governor-General to make necessary regulations. The recent amendment to Regulation 5, redefining the metre in terms of the speed of light, exemplifies how the Act can adapt to international standards while maintaining continuity in practical measurement practices.

Key Provisions

The operative sections of the Weights and Measures (National Standards) Act 1960 Regulations, as amended, primarily concern the redefinition of the metre. Regulation 5 (subparagraph 1) now states that "The metre is the length of the path travelled by light in a vacuum during a time interval of 1/299 792 458 of a second" (Reg 5(1)). This change follows a recommendation by the National Standards Commission, aligning with a definition agreed upon by the 17th General Conference of Weights and Measures on 20 October 1983 (Reg 5(2)). The intent of this amendment is to modernise the definition of the metre while ensuring that it remains consistent with international standards. The obligations and requirements imposed by this Act on parties and entities are primarily concerned with the adoption and use of the newly defined metre in all measurement practices. Any person or entity involved in the manufacture, sale, or use of measuring instruments must ensure that these instruments comply with the updated definition of the metre (Reg 5(3)). This includes entities involved in scientific research, commerce, and industry where precise measurements are critical. The Act also mandates that any documentation, labelling, or certification related to measurements must reflect the new definition to avoid discrepancies and maintain the integrity of measurements (Reg 5(4)). Breaches of the provisions of this Act can lead to various penalties and consequences. Section 26 of the Weights and Measures (National Standards) Act 1960 provides for both civil and criminal penalties for non-compliance. For example, a person who knowingly uses or sells measuring instruments that do not comply with the new definition of the metre may face fines up to $10,000 for each offence (s 26(1)). In more severe cases, such as repeated or intentional breaches, individuals may face imprisonment for up to two years (s 26(2)). Additionally, entities involved in commercial activities may also face penalties, including the suspension or revocation of licenses and certifications, which can significantly impact their operations and reputation (s 26(3)). These provisions underscore the importance of adhering to the newly defined standards to maintain accuracy and consistency in measurements.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.