Repeatability is the amount of variation in the measurement system that is due to the gage. A low repeatability value indicates that the gage is measuring consistently. The context of the attribute gage study will determine what a low repeatability value is.

Minitab gives two repeatability values: pre-adjusted repeatability and repeatability. Minitab adjusts repeatability for over-estimation and uses the value in the calculation for bias.

For the length data, the adjusted repeatability is low (0.0020047), indicating that the attribute gage is performing consistently.