AS 2103-1978

1 - AS 2103-1978 DIAL GAUGES AND DIAL TEST INDICATORS (METRIC SERIES)
4 - PREFACE
6 - CONTENTS
7 - SECTION 1. SCOPE AND GENERAL
7 - 1.1 SCOPE.
7 - 1.2 APPLICATION.
7 - 1.3 NOMENCLATURE.
7 - 1.4 TERMS AND DEFINITIONS.
7 - 1.4.1 Dial gauge
7 - 1.4.2 Dial test indicator
7 - 1.4.3 Scale mark
9 - 1.4.4 Scale interval
9 - 1.4.5 Scale division
9 - 1.4.6 Discrimination
9 - 1.4.7 Hysteresis
9 - 1.4.8 Hysteresis band
9 - 1.4.9 Repeatability
9 - 1.4.10 Limits of error
9 - 1.4.11 Calibration
9 - 1.5 REFERENCE TEMPERATURE.
9 - 1.6 MARKING.
9 - 1.7 PACKAGING.
10 - SECTION 2. DIAL GAUGES
10 - 2.1 SCOPE OF SECTION.
10 - 2.2 GENERAL DESIGN FEATURES.
10 - 2.2.1 General.
10 - 2.2.2 Case Design.
10 - 2.2.3 Dial Cover.
10 - 2.2.4 Zero Adjustment.
10 - 2.2.5 Back Lug Fixings.
10 - 2.2.6 Plunger.
10 - 2.3 GENERAL DIMENSIONS AND REQUIREMENTS.
10 - 2.3.1 General Dimensions.
10 - 2.3.2 Dial.
12 - 2.3.3 Pointer.
13 - 2.3.4 Revolution Counter.
13 - 2.3.5 Plunger.
14 - 2.3.6 Contact Point.
14 - 2.4 PERFORMANCE.
14 - 2.4.1 General.
14 - 2.4.2 Discrimination.
14 - 2.4.3 Repeatability of Reading.
14 - 2.4.4 Calibration.
16 - SECTION 3. DIAL TEST INDICATORS
16 - 3.1 SCOPE OF SECTION.
16 - 3.2 GENERAL DESIGN FEATURES.
16 - 3.2.1 General.
16 - 3.2.2 Stylus Lever.
16 - 3.2.3 Case Design.
16 - 3.2.4 Dial Cover.
16 - 3.2.5 Zero Adjustment.
16 - 3.2.6 Bias Reversal.
16 - 3.3 GENERAL DIMENSIONS AND REQUIREMENTS.
16 - 3.3.1 General Dimensions.
16 - 3.3.2 Dial.
17 - 3.3.3 Pointer.
18 - 3.3.4 Stylus.
18 - 3.4 PERFORMANCE.
18 - 3.4.1 General.
19 - 3.4.2 Discrimination.
19 - 3.4.3 Repeatability of Reading.
19 - 3.4.4 Calibration.
20 - APPENDIX A - METHODS OF TEST FOR DIAL GAUGES
20 - A1 GENERAL.
20 - A2 DISCRIMINATION.
20 - A3 HYSTERESIS.
20 - A4 REPEATABILITY.
20 - A5 CALIBRATION.
25 - APPENDIX B - METHODS OF TEST FOR DIAL TEST INDICATORS
25 - B1 GENERAL.
25 - B2 DISCRIMINATION.
25 - B3 HYSTERESIS.
25 - B4 REPEATABILITY.
26 - B5 CALIBRATION.
29 - APPENDIX C - CARE AND USE OF DIAL GAUGES AND DIAL TEST INDICATORS
29 - C1 CARE OF THE INSTRUMENTS.
29 - C2 USE OF THE INSTRUMENT.
30 - C3 CHOICE OF MAGNIFICATION.
30 - C4 CONTACT POINTS.

Specifies dial gauges and dial test indicators used for linear measurement, reading to 0.01 mm and 0.002 mm, and gives requirements for materials, properties, basic design details, accuracy and finish. Appendices describe methods of test for the more important features of the instruments, and give notes on their care and use. Information is also given for calibration requirements for long travel dial gauges. For dial gauges, the Standard is in technical agreement with ISO/R463, but the accuracy and performance requirements have been amplified to show repeatability and discrimination as two separate metrological properties. For dial test indicators the technical requirements are in complete agreement with current ISO/TC3 work.

This standard applies to dial gauges and dial test indicators for linear measurement. It specifies requirements for the more important general dimensions, finish, accuracy, scale graduations, marking and packaging, together with certain design features necessary to ensure convenience in use and repeatability of readings. Notes on methods of testing the more important features of dial gauges and dial test indicators are given in Appendices A and B, and notes on the care and use of these instruments are given in Appendix C.

Under Revision See DR 96368 - DR 96369 (in part)