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ence properties in the public scale. The operational structure of direct measurement
in this case is much simpler, as depicted in Fig. 7.12.
7.3.4 The Hexagon Framework
The two operational implementations presented in the previous sections can be
merged into one conceptual structure, which then presents a more implementationneutral and therefore general interpretation of direct measurement, as depicted in
Fig. 7.13 (referred to henceforth in this book as the “Hexagon Framework”). This
structure shows that in a direct measurement the map
property under measurement
public value
→
may be implemented, and therefore a Basic Evaluation Equation may be obtained,
in two alternative ways:
Fig. 7.13 The conceptual structure of direct measurement: the Hexagon Framework
Fig. 7.12 The operational structure of direct measurement, as based on the direct comparison of
the property under measurement and the public reference properties
7 Modeling measurement and its quality