公开(公告)号：US20210132112A1

公开(公告)日：2021-05-06

申请号：US17043770

申请日：2019-05-27

Applicant: NIDEC-READ CORPORATION

Inventor： Hidekazu YAMAZAKI ,  Yukio KUMAMOTO

IPC: G01R1/067

Abstract: A probe has a substantially bar shape, and includes a tip end, a base end, and a body portion that is located between the tip end and the base end and has a thickness in a thickness direction orthogonal to an axial direction of the substantially bar shape thinner than the tip end. The body portion includes a slope surface that is continuous with the tip end and is inclined with respect to the axial direction in a direction in which the thickness becomes gradually thinner with increasing distance from the tip end. A first region having a surface shape that bulges outward is provided in at least a part of the slope surface.