Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document was last issued.

The following BSI references relate to the work on this standard: Committee reference TDW/4 Draft for comment 08/30178087 DC

Publication history

First published November 1965

Second (present) edition, November 2008

Summary of pages

This document comprises a front cover, an inside front cover, pages i to ii, pages 1 to 14, an inside back cover and a back cover.

Foreword

Publishing information

This British Standard is published by BSI and came into effect on 30 November 2008. It was prepared by Technical Committee TDW/4, Technical product realization.A list of organizations represented on this committee can be obtained on request to its secretary.

Supersession

This British Standard supersedes BS 907:1965, which is withdrawn.

Relationship with other documents

BS EN ISO 463 speciﬁes the most important design and metrological characteristics of mechanical dial gauges.

Information about this document

This new edition has been fully revised to bring it up to date.

Presentational conventions

The provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.

Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.

Contractual and legal considerations

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

1 Scope

This British Standard speciﬁes requirements for dial gauges with the plunger movement parallel to the plane of the dial.

The standard is applicable to gauges having dial diameters from 47.6 mm or 1⁷⁄8 in to 63.5 mm or 2¹⁄2 in, as measured from the outside of the scale marks, and scale divisions of 0.01 mm, 0.001 in (sometimes sub-divided into half divisions of 0.000 5 in, in which case they are commonly designated “0.000 5 in gauges”) or 0.000 1 in.

NOTE 1 Attention is drawn to the fact that the metric dimensions are not necessarily direct conversions of the imperial dimensions.

NOTE 2 Recommended dimensions for dial gauges are given in Annex A (Figure A.1) and notes on methods of testing and on the care and use of dial gauges are given in Annex B and Annex C respectively.

2 Terms and deﬁnitions

2.1 minimum scale value

2.2 scale division

2.3 discrimination

2.4 repeatability

2.5 limit of error

3 General features of design

4 Dial

4.1

4.2

4.3

5 Pointer

5.1

5.2

5.3

5.4

5.5

5.6

6 Revolution counter

7 Plunger

7.1

7.2

8 Contact point

9 Performance

9.1 General

9.2 Repeatability of reading

9.3 Discrimination

9.4 Limits of error

10 Packing

11 Marking

Bibliography

BS 907:2008

Specification for dial gauges for linear measurement

Current

Published:

30 Nov 2008