Gauge R&R: how much variation is the gauge?
A gauge R&R study separates measurement error from real part-to-part variation, so you can tell whether a tolerance decision is trustworthy.
Six big losses
OEE loss categories.
Availability, performance, and quality losses behind OEE: breakdowns, setup/adjustments, idling/minor stops, reduced speed, defects/rework, and startup rejects. Agree on the mapping before comparing lines.
See also: OEE · Total productive maintenance (TPM)
Use the concept: Downtime log template · SMED changeover observation template · Takt time calculator
In depth
Takt time vs cycle time vs lead time: calculate the right clock
A worked shift example separates customer pace, observed process speed and end-to-end delivery time, with practical checks before changing the line.
SMED changeover study: measure last good to first good
Use a time observation sheet to separate internal and external work, preserve safe setup steps, and verify a repeatable changeover improvement.