National Measurement (Recognized-Value Standard of Measurement of Acceleration due to Gravity – Lindfield, NSW) Determination 2026
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Commonwealth Coat of Arms of Australia
National Measurement (Recognized-Value Standard of Measurement of Acceleration due to Gravity – Lindfield, NSW) Determination 2026
I, Dr Victoria Anne Coleman, Chief Metrologist, National Measurement Institute, make the following determination.
Dated 9 March 2026
Dr Victoria Anne Coleman
Chief Metrologist
Contents
1 Name
2 Commencement
3 Authority
4 Schedules
5 Definitions
6 Recognized-Value Standard of Measurement of Acceleration due to Gravity
Schedule 1—Repeals
1 Name
This instrument is the National Measurement (Recognized-Value Standard of Measurement of Acceleration due to Gravity – Lindfield, NSW) Determination 2026.
2 Commencement
- Each provision of this instrument specified in column 1 of the table commences, or is taken to have commenced, in accordance with column 2 of the table. Any other statement in column 2 has effect according to its terms.
- Commencement information
- Column 1 Column 2 Column 3
- Provisions Commencement Date/Details
- The whole of this instrument The day after this instrument is registered.
Note: This table relates only to the provisions of this instrument as originally made. It will not be amended to deal with any later amendments of this instrument.
- Any information in column 3 of the table is not part of this instrument. Information may be inserted in this column, or information in it may be edited, in any published version of this instrument.
3 Authority
This instrument is made under paragraph 8A(1)(a) of the National Measurement Act 1960.
4 Schedules
Each instrument that is specified in a Schedule to this instrument is amended or repealed as set out in the applicable items in the Schedule concerned, and any other item in a Schedule to this instrument has effect according to its terms.
5 Definitions
Note: Recognized-value standard of measurement is defined in the Act.
In this instrument:
Act means the National Measurement Act 1960.
6 Recognized-Value Standard of Measurement of Acceleration due to Gravity
- The magnitude of the acceleration in a vacuum of a body due to the gravitational attraction of the earth at the benchmark inscribed “Absolute Gravity Station 200498.9905, Sydney, Commonwealth of Australia” installed in room C269 of the National Measurement Institute, 36 Bradfield Road, West Lindfield, NSW, is a Recognized-Value Standard of Measurement having a value of 9.7963779533 m·s-2 with an expanded uncertainty of 106 ×10-9 m·s-2.
Note: The expanded uncertainty is based on a standard uncertainty multiplied by a coverage factor k=2, providing a level of confidence of 95%.
Schedule 1—Repeals
National Measurement Act 1960 - para 8A(1)(a) - Determination by the National Standards Commission - Recognized-Value Standard of Measurement of Acceleration Due to Gravity
1 The whole of the determination
Repeal the determination