ASME B89.1.10M-2001

[Revision of ASME/ANSI B89.1.10M-1987 (R1995)]

DIAL INDICATORS (FOR LINEAR MEASUREMENTS)

A N A M E R I C A N N A T I O N A L S T A N D A R D

Copyright c 2002 by the American Society of Mechanical Engineers.

No reproduction may be made of this material without written consent of ASME.

Intentionally left blank

Copyright 2002 by the American Society of Mechanical Engineers.

No reproduction may be made of this material without written consent of ASME.

c

A N A M E R I C A N N A T I O N A L S T A N D A R D

DIAL INDICATORS (FOR LINEAR MEASUREMENTS)

ASME B89.1.10M-2001

[Revision of ASME/ANSI B89.1.10M-1987 (R1995)]

Date of Issuance: July 1, 2002

This Standard will be revised when the Society approves the issuance of a new edition. There will be no addenda issued to this edition.

ASME will issue written replies to inquiries concerning interpretation of technical aspects of this Standard.

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This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large.

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ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.

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without the prior written permission of the publisher.

The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990

Copyright © 2002 by

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

All Rights Reserved Printed in U.S.A.

CONTENTS

Foreword iv

Committee Roster v

Correspondence With the B89 Committee vi

1. Scope 1

2. References 1

3. Glossary 1

4. Classification by Type 1

5. Classification by Group 1

6. Dial Graduation Values 1

7. Nomenclature 1

8. General Requirements 2

Figures

1. Type A-AD Dial Indicator 2

2. Type B-AD Dial Indicator 3

3. Type C-AD Dial Indicators 4

4. Balanced Dial Showing Specimen Numbering 4

5. Continuous Dial Showing Specimen Numbering 5

6. Dial Showing Specimen Dial Marking and Revolution Counter 5

7. Calibration of a 0.0001-in. Graduation Indicator 6

Tables

1. Nominal Design Dimensions for Type A Indicators 5

2. Determination of Maximum Permissible Error (MPE) 6

   Nonmandatory Appendices

   1. Testing, Operating, and Environmental Considerations 7

   2. Electronic Indicators 9

   3. Uncertainty for Indicator Calibrations 12

iii

FOREWORD

ASME Standards Committee B89 on Dimensional Metrology, under procedures approved by the American National Standards Institute (ANSI), prepares standards that encompass the inspection and the means of measuring characteristics of such various geometric parameters as diameter, length, flatness parallelism, concentricity, and squareness. Because dial indicators are widely used for the measurement and comparison of some of these features, the chair of the B89.1 Main Committee on Length authorized formation of Working Group B89.1.10 to prepare this Standard.

Most dial indicators used in the U.S. are built to inch measure specifications but International Organization for Standardization (ISO) standards do not address all the needs of U.S. industry. The inch measure portion of this Standard is strongly influence by Commercial Standard CS(E) 119-45, effective January 1, 1945, which was prepared by the American Gage Design Committee (from which the term AGD Standard is derived), and distributed by the Department of Commerce. It is also based in part on Commercial Item Description A-A-2348B, dated July 30, 1991, developed by the General Services Administra- tion (GSA). It is also based on manufacturers’ current practices and technologies. The metric measure portion of this Standard is based primarily on ISO efforts in support of international commerce.

Working Group B89.1.10 wishes to acknowledge the leadership of its chair, Bruce Robertson, whose untimely passing has prevented him from seeing the end result of his contributions to the work of this group.

This Standard was approved by ANSI on April 10, 2001.

iv

ASME STANDARDS COMMITTEE B89

Dimensional Metrology

(The following is the roster of the Committee at the time of approval of this Standard.)

OFFICERS

R. B. Hook, Chair

B. Parry, Vice Chair

P. Esteban, Secretary

COMMITTEE PERSONNEL

D. Beutel, Caterpillar Inc.

K. L. Blaedel, University of California

J. B. Bryan, Bryan Associates

T. Carpenter, U.S. Air Force

T. Charlton, Brown and Sharpe Manufacturing

P. Esteban, The American Society of Mechanical Engineeers

G. Hetland, Hutchinson Technology

R. J. Hocken, University of North Carolina

R. B. Hook, Metcon

B. Parry, Boeing Co.

B. R. Taylor, Renishaw PLC

R. C. Veale, National Institute of Standards and Technology

PROJECT TEAM 1.10: DIAL GAGES

D. Christy, Chair, Mahr Federal, Inc.

C. Anderson, Chicago Dial Industries

E. Blackwood, Boeing Commercial Airplane

J. Bodley, Bosch Braking Systems

D. Carlson, The L. S. Starrett Co.

D. Grammas, Chicago Dial Indicator Co.

C. Hayden, The L. S. Starrett Co.

K. Kokal, Micro Laboratories, Inc.

W. Letimus, Gagedoctor LLC

M. Moran, General Service Administration

M. Stanczyk, SKF OSA/MRC Bearings

v

CORRESPONDENCE WITH THE B89 COMMITTEE

General. ASME Codes and Standards are developed and maintained with the intent to represent the consensus of concerned interests. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions, and attending Committee meetings. Correspondence should be addressed to:

Secretary, B89 Main Committee

The American Society of Mechanical Engineers Three Park Avenue

New York, NY 10016

Proposed Revisions. Revisions are made periodically to the standard to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the standard. Approved revisions will be published periodically.

The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specif c as possible: citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal, including any pertinent documentation.

Interpretations. Upon request, the B89 Committee will render an interpretation of any requirement of the standard. Interpretations can only be rendered in response to a written request sent to the Secretary of the B89 Main Committee.

The request for interpretation should be clear and unambiguous. It is further recommended that the inquirer submit his/her request in the following format:

Subject: Cite the applicable paragraph number(s) and provide a concise description.

Edition: Cite the applicable edition of the standard for which the interpretation is being requested.

Question: Phrase the question as a request for an interpretation of a specif c requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation.

Requests that are not in this format may be rewritten in the appropriate format by the Committee prior to being answered, which may inadvertently change the intent of the original request.

ASME procedures provide for reconsideration of any interpretation when or if additional information which might affect an interpretation is available. Further, persons aggrieved by an interpretation may appeal to the cognizant ASME committee or subcommittee. ASME does not ‘‘approve,’’ ‘‘certify,’’ ‘‘rate,’’ or ‘‘endorse’’ any item, construction, proprietary device, or activity.

Attending Committee Meetings. The B89 Main Committee regularly holds meetings that are open to the public. Persons wishing to attend any meeting should contact the Secretary of the B89 Main Committee.

vi

ASME B89.1.10M-2001

DIAL INDICATORS (FOR LINEAR MEASUREMENTS)

1. SCOPE

   This Standard is intended to provide the essential requirements for dial indicators as a basis for mutual understanding between manufacturers and consumers. Described herein are various types and groups of dial indicators used to measure a linear dimension of a variation from a reference dimension.

   
   

2. REFERENCES

   CS(E) 119-45 Dial Indicators (For Linear Measurements) Publisher: Department of Commerce, 1401 Constitution

   Avenue NW, Washington, DC 20230

   A-A-2348B Indicator, Dial, Accessories, and Test Set Publisher: General Services Administration, 1800 F

   Street NW, Washington, DC 20405

   MIL-I-8422D Indicators, Dial and Accessories Publisher: National Technical Information Service

   (NTIS), 5285 Port Royal Road, Springfield VA

   22161

   ISO R/463 Dial Gauges Reading in 0.01 mm, 0.001 in. and 0.0001 in.

   Publisher: International Organization for Standardization (ISO), 1 rue de Varembe´, Case Postale 56, CH- 1211, Gene`ve, Switzerland/Suisse

   
   

3. GLOSSARY

   dial indicator: a measuring instrument in which small displacements of a spindle or a lever are magnifie by suitable mechanical means to a pointer rotating in front of a circular dial having a graduated scale.

   error of indication: the amount by which the displayed value on a measurement device differs from the true input.

   
   

4. CLASSIFICATION BY TYPE

   1. Type A. Dial indicators in which the spindle is parallel to the dial face (see Fig. 1).

   2. Type B. Dial indicators in which the spindle is

      
      

      perpendicular to the dial face (see Fig. 2).

   3. Type C. Dial indicators in which the measuring contact member is a lever. These are also known as dial test indicators (see Fig. 3).

      
      

5. CLASSIFICATION BY GROUP

   Group members are assigned in accordance with nominal bezel diameter and apply only to Type A and B indicators (Table 1). For Type C indicators, which are available in a variety of sizes and designs, refer to the various manufacturers’ standards. Group descriptions are as follows:

   1. Group 0. Dial indicators having nominal bezel diameters from 1 in. (25 mm) up to and including 13⁄8 in. (35 mm).

   2. Group 1. Dial indicators having nominal bezel diameters from above 13⁄8 in. (35 mm) up to and including 2 in. (50 mm).

   3. Group 2. Dial indicators having nominal bezel diameters from above 2 in. (50 mm) up to and including 23⁄8 in. (60 mm).

   4. Group 3. Dial indicators having nominal bezel diameters from above 23⁄8 in. (60 mm) up to and including 3 in. (76 mm).

   5. Group 4. Dial indicators having nominal bezel diameters from above 3 in. (76 mm) up to and including 33⁄4 in. (95 mm).

      
      

6. DIAL GRADUATION VALUES

   All types of indicators shall have least graduations arranged either in four classes of inch values (i.e., 0.00005 in., 0.0001 in., 0.0005 in., and 0.001 in.) or

   in four classes of metric values (i.e., 0.001 mm, 0.002 mm, 0.01 mm, and 0.02 mm).

   NOTE: Other values for graduations are sometimes used in industry. The supplier and the customer should agree on the determination of the maximum permissible error for dial indicators with graduations not mentioned in this Standard.

   
   

7. NOMENCLATURE

For the purposes of this Standard, the nomenclature in Figs. 1 through 6 shall apply.

1