公开(公告)号：US20240142214A1

公开(公告)日：2024-05-02

申请号：US18498417

申请日：2023-10-31

Applicant: MITUTOYO CORPORATION

Inventor： Takumi MAKINO ,  Mao KIKUCHI ,  Tomoharu KURATA

IPC: G01B5/28 ,  G01B5/20

CPC classification number: G01B5/28 ,  G01B5/201

Abstract: There is provided a measuring device that is inexpensive and easy to use, yet provides sufficient accuracy and resolution in continuous scanning measurement to measure workpiece surfaces. A dial gauge includes a spindle provided to be movable reciprocatively in an axial direction through a main body case. The main body case includes a stem provided to protrude from a side face of the main body case. A ball bearing that bears the spindle is provided inside the stem. A workpiece and the dial gage are relatively moved while a contact point at the tip of the spindle is in contact with the surface of the workpiece, and continuous scanning measurement is performed to measure irregularities of the surface of the workpiece or the amount of runout of the rotating workpiece.