National Measurement Institute (NMI)

Site

Length and Dimensional Standards Project

Accreditation No.

1

Site No.

14319

Date of Accreditation

28 Jun 1999

Address

Unit 1, 153 Bertie Street
Port Melbourne , VIC 3207
Australia

measurement.gov.au

Contact

Ms Charmaine Kwan P: +61 (02) 84673836

Availability

Services conditionally available to external clients

National Measurement Institute (NMI) address map

Scope of Accreditation

Print scopes
Length and Dimensional Standards Project

ISO/IEC 17025 (2017)

Calibration

  • The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Service Product Determinant Technique Procedure Limitations
Dimensional metrology - Engineering equipment and precision instruments Autocollimators Angle (arc) Direct measurement against a reference standard

Capability

With Calibration and Measurement Capability of -

0.15 seconds of arc from 0 seconds of arc to 1000 seconds of arc
Dial gauges; Electronic length gauges; Micrometer heads Length measurements Direct measurement against a reference standard

Capability

With Calibration and Measurement Capability of -
Micrometer heads
0.3 μm from 0 mm to 25.4 mm
Digital length indicators
0.21 μm from 0 mm to 25.4 mm
Dial gauges
0.1 μm from 0 mm to 25.4 mm
Steel rulers and measuring tapes Length measurements Direct measurement against a reference standard

Capability

With Calibration and Measurement Capability of -
0.008 mm from 0 mm to 1 m for steel rules
Dimensional metrology - Jigs, fixtures, cutting tools, machine tools, gears, splines and serrations Components and QC standards; Jigs and fixtures Angle; Diameter; Flatness; Length measurements; Parallelism Direct measurement

Capability

With Calibration and Measurement Capability of -

Types requiring linear, angular and form measurements 
(1.9 + 0.003 x L) μm for lengths (L) from 0.01 mm to 1200 mm
Dimensional metrology - Length and angle standards Angle gauges and precision polygons; Precision circular scales Angle (arc) Direct measurement against a reference standard

Capability

With calibration and measurement capability of -
0.05 seconds of arc for precision circular scales (indexing tables, rotary encoder)
0.2 seconds of arc for polygons with up to 72 sides
0.3 seconds of arc for angle gauges
Calibration gauges for coordinate measuring machines Angle (arc); Diameter; Flatness; Length measurements; Parallelism Direct measurement against a reference standard

Capability

With calibration and measurement capability of -
(0.72 + (0.0015 x L)2)0.5 μm for lengths (L) from 0 mm to 1200 mm
External cylindrical standards; Internal cylindrical standards Diameter Direct measurement against a reference standard

Capability

With calibration and measurement capability of -
(902 + (1.3 x L)2)0.5 nm for diameters (L) from 1.5 mm to 125 mm for internal cylindrical standards
(902 + (1.3 x L)2)0.5 nm for diameters (L) from 1 mm to 200 mm for external cylindrical standards
Gauge blocks and accessories; Length bars and accessories Length measurements Direct measurement against a reference standard

Capability

With calibration and measurement capability of -
(432 + (0.7 x L)2)0.5 nm for lengths (L) from 0.5 mm to 102 mm
(942 + (1.02 x L)2)0.5 nm for lengths (L) from 102 mm to 1300 mm
Optical flats; Optical parallels Flatness; Length measurements; Parallelism Direct measurement against a reference standard

Capability

With calibration and measurement capability of -
(202 + (0.24 x L)2)0.5 nm for diameters (L) from 10 mm to 200 mm (flatness)
30 nm for diameters from 10 mm to 120 mm (parallelism)
80 nm for diameters from 10 mm to 200 mm (length)
Precision linear scales Length measurements Direct measurement against a reference standard

Capability

With calibration and measurement capability of -
0.14 μm to 0.17 μm for lengths from 0.01 mm to 300 mm (stage micrometers and graticules)
(0.32 + (0.0012 x L)2)0.5 μm for lengths (L) from 0.5 mm to 1000 mm

Dimensional metrology - Limit gauges and reference standards Plain plug gauges Diameter Direct measurement against a reference standard

Capability

With Calibration and Measurement Capability of -

(902 + (1.3 x L)2)0.5 nm for diameters (L) from 1.0 mm to 125 mm
Dimensional metrology - Surface topography Cylinders; Hemispherical and spherical standards; Inclined standards; Magnification standards; Rings; Roundness standards Depth; Roundness Comparison with a reference standard by differential measurement; Direct measurement

Capability

With calibration and measurement capability of -
0.008 μm for hemispherical and spherical standards from 2 mm to 400 mm
0.03 μm for cylinders and rings, diameters from 2 mm to 400 mm
0.10 μm for magnification standards (sagitta depth) from 0 μm to 50 μm
0.10 μm for inclined standards (diametral difference) from 0 μm to 50 μm
Surface finish reference standards Depth; Ra; Rz; Surface texture Direct measurement Calibration of surface finish reference standards following ISO 5436

Capability

With calibration and measurement capability of -
(0.005 + 0.0047 D) μm where D is the depth in μm for grooves and step heights from 0.1 μm to 250 μm
(0.013 + 0.017 P) μm where P is the measured parameter Rₐ or Rq from 0.1 μm to 10 μm
(0.005 + 0.016 P) μm where P is the measured parameter Rz, Rp, Rv or Rt from 0.1 μm to 30 μm
Dimensional metrology - Survey and alignment equipment Electronic distance measuring equipment Length measurements Direct measurement

Capability

With Calibration and Measurement Capability of -

0.25 mm to 0.49 mm in the range 20 m to 650 m by base line measurements
3 in 108 for scale factor by frequency calibration under ambient laboratory conditions
0.1 mm for zero offset correction by baseline measurements and least square determination (ISO17123 part 4)
Length and Dimensional at Lindfield

ISO/IEC 17025 (2017)

Calibration

  • The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Service Product Determinant Technique Procedure Limitations
Dimensional metrology - Engineering equipment and precision instruments Steel rulers and measuring tapes Length measurements Direct measurement against a reference standard

Capability

Measuring Tapes:
With Calibration and Measurement Capability of -
0.3 mm from 1 mm  up to 30 m
0.6 mm above 30 m up to 60 m
0.9 mm 0above 60 m up to 100 m
Dimensional metrology - Length and angle standards Laser length interferometers Length measurements Direct measurement against a reference standard

Capability

With calibration and measurement capability of -

(402 + (12 x L)2)0.5 nm for lengths (L) from 0 m to 20 m

Dimensional metrology - Survey and alignment equipment Electronic distance measuring equipment Length measurements Direct measurement

Capability

With Calibration and Measurement Capability of -
0.14 mm to 0.22 mm in the range 0 m to 131 m by comparison to laser interferometer

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