ShareFacebookXWhatsApp

Repeatability

Repeatability is the capability of the gage (a.k.a. the measurement system which could be a gage, an appraiser, inspector, or measurer) generating the same exact result every time measuring the same thing more than one time.

How well does the appraiser repeat their own measurement?

Perhaps that appraiser get the exact same result but that results if off the true actual value the same amount each time. This indicates that the gage itself has a calibration problem that first needs to be resolved.

Repeatability is associated with Precision. 

Reproducibility

Reproducibility compares the measurement of one appraiser to other appraiser(s) measuring the same object using the same gage.

The term "among" is used when explaining reproducibility since it relays information about the measurements among all the appraisers. 

Reproducibility is associated with Reliability. 

What is the capability of each appraiser getting the same exact measurement on the same part using the same gage?

How well do they reproduce each others' resulting measurements on each part?

Practice Exam question

Which of the following devices are examples of attribute measurement devices?

A) Plug gages

B) Calipers

C) Dial indicators

D) Limit length gages

E) Micrometers

Answer: A & D. The others are considered variable measurement devices. 

Return to the MEASURE Phase

Visit Measurement System Analysis

Six Sigma / Lean Practice Exam

Templates, Tables, and Calculators

Return to the home page