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Metrology

Design Unit: Our Services

UK National Gear Metrology Laboratory

In 1987, the UK National Gear Metrology Laboratory (NGML) was established in Âé¶¹´«Ã½. It is the  and part of the UK’s National Measurement System supported by the Department for Science, Innovation and Technology.

NGML supports gear manufacturers and gear users through:

  • an independent gear measurement service to verify the quality of product gears
  • gear artefact calibration, offering one of the lowest measurement uncertainties worldwide
  • an on-site gear measuring machine calibration service
  • reverse engineering expertise
  • training and education- short courses, seminars and bespoke training courses with the British Gear Association (BGA)
  • measurement consultancy
  • measurement research and support for gear research in the UK and Europe
  • ISO standards development
Machine drilling into a big clog

The laboratory facilities include:

  • Enhanced Klingelnberg P65 Gear Measuring Centre, used as the reference calibration and measurement machine
  • Leitz PMM-C, MPE = 0.4 + L/850 μm
  • Taylor Hobson Form Talysurf 50 surface roughness and form measuring instrument
  • Alicona Infinite Focus G4 optical dimensional and surface roughness measurement
  • Hexagon Absolute Romer 7-Axis Arm 8520 with RS5 Laser Scanner

Accreditation

NGML are accredited by the United Kingdom Accreditation Service (UKAS) to ISO 17025:2017 for the measurement and calibration of gears. We are traceable to primary calibration facilities at:

  • the  in the UK
  • the , the national metrology institute of Germany