SEGMENT ROUNDNESS MEASURING DEVICE AND SEGMENT ROUNDNESS MEASURING METHOD

摘要

This segment roundness measuring device comprises a correction means (31) for correcting positional deviation due to eccentricity of a center of rotation (O1) of an erector turning portion (21) on the basis of an angle detected by an angle detector (50) and a distance measured by three or more distance meters (41 - 44) that are disposed on the erector turning portion (21) at mutually different angular positions.