National Physical Laboratory

|National Physical Laboratory

A new approach to CMM software validation

3D Optical Scanner Dimensional Verification Facility at the NPL’s “National FreeForm Centre”

Uncertainty associated with coordinate measurement in comparator mode

Vertical axis non-linearities in wavelength scanning interferometry

Calibration of grid plates bearing a high density of targets

Concept and Modelling of a Novel Active Triskelion Low Force Transfer Artefact

Investigating mechanical characteristics of styli for micro-CMMs

Traceable In-process Measurement (TIM) – Producing dimensional transfer artefacts for the assessment of workshop machine tool performance

Characterisation of a scintillation flat panel detector employed by an X-ray computed tomography system: measurements of MTF, NPS and DQE

Assessing fringe projector volumetric error sources using the NPL tetrahedral artefact

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