Representational theory of measurement / Joel Mitchell -- Measurability / Luca Mari -- Measurement with experimental controls / Glenn W. Harrison [and others] -- An analytical history of measuring practices : the case of velocities of money / Mary S. Morgan -- Representation in economics / Roger E. Backhouse -- Axiomatic price index theory / Marshall B. Reinsdorf -- National accounts and indicators / Frank A.G. den Butter -- Invariance and calibration / Marcel Boumans -- Representation in econometrics : a historical perspective / Christopher L. Gilbert and Duo Qin -- Structure / Hsiang-Ke Chao -- Local sensitivity in econometrics / Jan R. Magnus -- The empirical significance of econometric models / Thomas Mayer -- Precision / Theordore M. Porter -- Optimal experimental design in models of decision and choice / Peter G. Moffatt -- Least squares regression : graudation and filters / Tommaso Proietti and Alessandra Luati -- Timeliness and accuracy / Dennis Fixler.