| 摘要 |
PURPOSE: A concentricity measurement tool is provided to assemble upper and lower blocks by joining the same with a screw from the bottom to the top, thereby easily controlling and accurately correcting the height. CONSTITUTION: A concentricity measurement tool comprises an upper block (11), a lower block, and a plurality of balls (13). The upper block is vertically penetrated and includes a space unit for seating a block in the inside. The lower block is inserted into the bottom of the upper block, thereby being seated inside the space unit. The balls are placed on the top surface of the lower block and protruding more than the top surface of the upper block, thereby supporting a measurement object. Upper and lower block units, which are vertically arranged, are formed to be integrated so that the lower block is formed. The lower block is joined to be integrated by a blot being coupled from the lower block unit to the upper block unit.
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