UCL 3DIMPact research group at UCL CEGE


Dr Andrew Lewis, Honorary Professor

Dr Andrew Lewis

Andrew joined NPL in 1988 and has devoted his career to dimensional metrology, including interferometry for length standards measurement, development of a micro-CMM, swing arm profilometry, technology licensing to UK companies, and recent work in large volume metrology with laser trackers. He is NPL's dimensional representative on the CIPM's Consultative Committee for Length, representative to (and ex-chair of) the EURAMET committee for length, and sits on several standards committees. Additionally he is the Science Leader for dimensional metrology and is responsible for strategy and quality of NPL's dimensional metrology work.

Andrew Lewis has been the lead in the EU Luminar project .

3DIMPact was also project partner in Luminar.

See Dr Andrew Lewis publications on Researchgate.

Dr Andrew Lewis

Dr Andrew Lewis


Room F3-A2, NPL
Hampton Road
TW11 0LW


  • Honorary Professor
    Dept of Civil, Environ &Geomatic Eng
    Faculty of Engineering Science

Joined UCL


My research area is precision dimensional metrology with specialisation in interferometric techniques such as fringe counting interferometry or multiple-wavelength interferometry.

Award year Qualification Institution
1994 Dip.
Imperial College of Science, Technology and Medicine
1994 Dr
Applied Optics
Imperial College of Science, Technology and Medicine
1992 MA
Master of Arts
Natural Sciences
University of Cambridge
1988 BA Hons
Bachelor of Arts (Honours)
Natural Sciences
University of Cambridge

I have twenty nine years experience in length metrology, having joined the National Physical Laboratory (NPL) directly after graduating from the University of Cambridge. I have worked in many research subjects in length metrology including end standards, coordinate metrology, large scale metrology and micro-scale coordinate metrology. I have designed, built, and programmed several world class instruments for the measurement of length, shape and size including the Primary Length Bar Interferometer, the NPL Small CMM, the NPL Primary Phase-Stepping Gauge Block interferometer and the Secondary Length Bar Interferometer. I have overseen the successful knowledge transfer of several of these instruments to a UK manufacturer, and over 30 examples of the commercial versions of the Gauge Block Interferometer and Length Bar Interferometers have been sold worldwide with several sales leads in the pipeline. 

I represent NPL on several international committees and am an internationally acknowledged expert in length bar and gauge block metrology and have given several training courses, for international scientists, in these areas. I have run several large international comparisons and presented my work at many national and international conferences. 

I am a Chartered Physicist and a Fellow of the Institute of Physics.