COEFFICIENT-OF-THERMAL-EXPANSION MEASUREMENT METHOD OF DIMENSION REFERENCE GAUGE, MEASURING DEVICE FOR COEFFICIENT OF THERMAL EXPANSION AND REFERENCE GAUGE A measurement target (10) comprising a plurality of measurement sections (S11, S12, S13) and a reference gauge (20) comprising a plurality of reference sections (S21, S22, S23) are placed in parallel in an inside of a temperature-controlled chamber (30). At first and second interior temperatures of the temperature-controlled chamber (30), first and second relative measurements of the lengths (D11, D12, D13) of the measurement sections (S11, S12, S13) are performed, based on the lengths (D21, D22, D23) of the corresponding reference sections. A CTE is calculated for each of the measurement sections.
