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Title: Evaluating Coordinate Measurement Machine Software Geometry Uncertainties Using National And International Standards
Author: Craig m. Shakarji, John Raffaldi
Source: 2004 Measurement Science Conference
Year Published: 2004
Abstract: The contribution of software to the uncertainty of measurements is an important but often overlooked aspect of uncertainty evaluations in many aspects of metrology. In coordinate metrology, software is often relied upon for complicated fitting of data, filtering, calibrations, and statistical calculations. Metrology equipment using software can range from hand-held digital calipers to coordinate measurement machines spanning several meters and can occur in almost any industry. Historically, it has been shown that software has often been responsible for measurement errors. While some of these errors have been reported, others are still surfacing. This paper highlights some of the causes, errors, and recommends using National and International Standards laboratories to evaluate the uncertainty component due to software.

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