| 摘要 |
PURPOSE:To perform potential measurement in a high resolution. CONSTITUTION:At the part facing at least a potential measuring surface 2, a conductive measuring probe 1 having an insulating material 1a, a dummy electrode 4, which is electrically conducted with the measuring probe 1, and a surface potentiometer 5, which measures the potential generated at the dummy electrode 4 when the measuring probe 1 comes into contact with the potential measuring surface 2 through the insulating material 1a, are provided. The insulating material 1a is constituted of a low friction member. |
