Between 1994 and 1998, AGMA published three standards on calibration of gear
measuringinstruments:ANSI/AGMA2010–A94,MeasuringInstrumentCalibration–PartI,
Involute Measurement, ANSI/AGMA 2113–A97, Measuring Instrument Calibration, Gear
Tooth Alignment Measurement, and ANSI/AGMA 2114–A98, Measuring Instrument
Calibration, Gear Pitch and Runout Measurements. These standards covered elemental
measurements specified in the accuracy requirements of ANSI/AGMA 2015–1–A01,
Accuracy Classification System — Tangential Measurements for Cylindrical Gears. The
Calibration Committee decided that supplemental information, on measurement system
conditions for calibration, accuracy requirements and uncertainty determination, was
desirable to have inan InformationSheet, AGMA931–A02, Calibrationof GearMeasuring
InstrumentsandTheirApplicationtotheInspectionofProductGears,thatwaspublishedin
2002.
The material in these AGMA documents was combined and submitted to ISO for the
development of ISO 18653:2003, Gears — Evaluation of instruments for the measurement
ofgears,andISO/TR10064–5:2005,Cylindricalgears — Codeofinspectionpractice — Part
5: Recommendations relative to evaluation of gear measuring instruments.
The Calibration Committee decided that similar standardization and information was
needed for the evaluation methods of double flank testers used for radial composite
measurement of gears. After a study of existing practices, standards, and literature the
information contained herein is a consolidation of the most common methods currently in
existence.

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