Andrew has nearly thirty years’ experience in dimensional metrology, having joined NPL directly after graduating from the University of Cambridge. He has worked in many research subjects in dimensional metrology including interferometric measurement of end standards, contact-based coordinate metrology, laser-based large-scale metrology and interferometer-based micro-scale coordinate metrology. He has 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, the Secondary Length Bar Interferometer and a Swing Arm Profilometer. Andrew has overseen the successful knowledge transfer of several of these instruments to a UK manufacturer, and over 35 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.
Andrew represents NPL on several international committees including the Consultative Committee for Length (ex-Working Group chairman), the EURAMET Technical Committee for Length (ex-chairman) and is an internationally acknowledged expert in the subject of length bar and gauge block interferometry. He has run several large international comparisons and presented his work at many national and international conferences. He is a peer reviewer for several international journals and has appeared on BBC TV programmes ranging from ‘Horizon’ to ‘The One Show’.
In 2023 Andrew was appointed an NPL fellow in recognition of his international leadership in dimensional metrology.