Measurement unit

A measurement unit comprising:

• a ground portion forming a part of a line configured to provide continuity for grounding electric potential, the ground portion including a surface at one end of the ground portion, the surface forming a plane;
• a signal portion forming a part of a line configured to provide continuity for a signal for measurement, the signal portion including an end portion configured to come out in a plane that is same as the plane of the ground portion;
• a dielectric portion provided between the ground portion and the signal portion, the dielectric portion being insulative;
• a first contact probe configured to expand and contract along a longitudinal axis, the first contact probe being electrically conductive and coming into contact with the signal portion;
• a second contact probe configured to expand and contract along a longitudinal axis, the second contact probe being electrically conductive and coming into contact with the ground portion;
• a first connecting portion including one set of the ground portion, the signal portion, and the dielectric, a surface of the first connecting portion being flat;
• and
• a second connecting portion including another set of the ground portion, the signal portion, and the dielectric and provided opposite to the first connecting portion, a surface of the second connecting portion being flat,
• wherein one end of each of the first and second contact probes comes into contact with the surface of the first connecting portion and the other end of each of the first and second contact probes comes into contact with the surface of the second connecting portion.