ASME_B89.1.14-2018.pdf

AN AM E R ICAN NAT IO NAL STANDARDASME B89.1.14-2018CalipersASME B89.1.14-2018CalipersAN AMERICAN NATIONAL STANDARDDate of Issuance:May 31,2018This Standard will be revised when the Society approves the issuance of a new edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Interpretations arepublishedontheCommitteewebpageandunderhttp:/go.asme.org/InterpsDatabase.PeriodicallycertainactionsoftheASMEB89CommitteemaybepublishedasCases.CasesarepublishedontheASMEwebsiteundertheB89CommitteePageathttp:/go.asme.org/B89committee as they are issued.Errata to codes and standards may be posted on the ASME website under the Committee Pages to provide corrections toincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedon the date posted.The B89 Committee Page can be found at http:/go.asme.org/B89committee.There is an option available to automaticallyreceive an e-mail notification when errata are posted to a particular code or standard.This option can be found on theappropriate Committee Page after selecting“Errata”in the“Publication Information”section.ASME is the registered trademark of The American Society of Mechanical Engineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunityto participate.The proposed codeorstandardwasmadeavailable forpublic reviewandcommentthatprovidesanopportunityfor additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proceduresand policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2018 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B89 Committee.vi1Scope.12Definitions.13References.14Caliper Design.15Maximum Permissible Errors.1Nonmandatory AppendicesAGood Operating Procedures.7BEnvironmental Considerations.9CMeasurement Uncertainty.10Figures5.10.4-1Testing Partial Surface Contact Error Example Test Points on Two Calipers Showing DifferentLengths and Different Distances From the Beam.55.10.6-1Testing Line Contact Error.55.10.7-1Testing Scale Shift Error Inside Measurement.65.10.7-2Testing Scale Shift Error Depth Measurement.65.10.7-3Testing Scale Shift Error Step Measurement.65.10.8-1Effect of Crossed Knife-Edge Internal Measuring Faces.65.10.8-2Testing Scale Shift Error Internal Measurement With Crossed Knife-Edge.6Tables5.8-1Maximum Permissible Errors of Calipers With Measuring Range Up to 1000 mm(40 in.).35.10.4-1Number of Test Points for EMPE.4C-4.1-1Uncertainty Budget for Performance Verification of the Partial Surface Contact Error for a0-mm to 150-mm Digital Caliper.12iiiFOREWORDASME B89 Standards Committee on Dimensional Metrology,under procedures approved by the American NationalStandards Institute,has the responsibility of preparing standards that encompass the inspection and the means ofmeasuringcharacteristicsofvariousgeometricalparameterssuchasdiameter,length,flatness,parallelism,concentricity,taper,andsquareness.Sincecalipersarewidelyusedforthemeasurementandcomparisonofsomeofthesefeatures,theB89 Consensus Committee authorized formation of Project Team B89.1.14 to prepare this Standard.TheInternationalOrganizationforStandardization(ISO)alsodevelopsstandardsindimensionalmetrology.ISOstan-dardsareapplicableintheUnitedStatesbutmaynotaddressalltheneedsofAmericanindustry,suchastheuseofboththeU.S.Customary and SI systems.This Standard has been developed to be consistent with ISO 13385-1:2011,whichaddressesthedesignandmetrologicalcharacteristicsofcalipers.ThisStandardhasalsobeendevelopedtocomplementISO13385-1:2011byprovidingadditionalinformationusefulinthespecific