Repeatability

Measurement variation when the same operator measures the same item repeatedly with the same equipment.

Examples

01In a repeatability test, one inspector measures the same piston pin 10 times with the same micrometer and gets a spread of 4 µm.
02The supplier's gauge study shows poor repeatability, which points to the gauge or fixture rather than to the operators.
03Repeatability improves after a fixture is added that holds the part in the same position for every reading.