To enable corresponding to high density of a measured object like an electronic circuit board by enabling precise agreement of a comparison between a measurement result and a measurement face of a measured object and making an investigation of the measurement result easy.

The device is provided with a placement platform 1 where an electronic circuit board 2 is placed, an antenna 5 measuring a radio wave emitted from a face of the board 2, a driving means 6 and an up-and-down driving means 5a that scan the antenna 5 along a face of the board 2, a line scanner 4 taking a face of the board 2 in as image information, a composing means 9 composing a measurement result of the antenna 5 and the image information taken in with a line scanner 4, and a displaying means 11 displaying a result composed by the composing means 9.