公开(公告)号：US20180120242A1

公开(公告)日：2018-05-03

申请号：US15800408

申请日：2017-11-01

Applicant: MITUTOYO CORPORATION

Inventor： Akihito TAKAHASHI ,  Seiji SASAKI

IPC: G01N23/04

CPC classification number: G01N23/046 ,  G01B5/0004 ,  G01B15/00 ,  G01B21/02 ,  G01B21/042 ,  G01N2223/303 ,  G01N2223/419 ,  G06T11/008

Abstract: A coordinate alignment tool includes a base having at least two ground faces to hold an attitude suitable for measurement by a coordinate measuring device and an attitude suitable for measurement by a measuring X-ray CT apparatus, and a fixer to fixate a measured object to the base; and at least three master balls arranged on the base.