Eyewear, Lenses & Vision Products worked example

Final Inspection Workload at 25% recheck and documentation allowance: a worked example in eyewear, lenses & vision products

This scenario runs the final inspection workload calculation on the strong side: 25% recheck and documentation allowance, with every other input held at its documented default. a quality lead needs to schedule final inspection for completed eyewear jobs

The inputs for this scenario

  • Lenses or finished pairs to inspect: 520 items (unchanged)
  • Final inspection throughput: 65 items / hr (unchanged)
  • Recheck and documentation allowance: 25 % (raised for this scenario; the documented default is 22)

Working through the calculation

  • Applying the documented formula (Base final inspection hours = lenses or finished pairs to inspect รท final inspection throughput) to the inputs above produces each figure below.
  • At this operating point the engine returns 10 hr for required final inspection workload hours, the number this scenario is built around.
  • At this operating point the engine returns 8 hr for base final inspection hours.
  • At this operating point the engine returns 25 % for recheck and documentation allowance.
  • At this operating point the engine returns 65 items / hr for final inspection throughput.

How this compares with the baseline

  • Against the tool's baseline example, where recheck and documentation allowance sits at 22% and the headline result is 9.76 hr, this scenario comes in 2.46% above the baseline at 10 hr.
  • Use it to staff the final-inspection bench for a shift, plan overtime, or check whether a volume spike can be cleared in the hours available. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Required final inspection workload hours: 10 hr (headline result)
  • Base final inspection hours: 8 hr
  • Recheck and documentation allowance: 25 %
  • Final inspection throughput: 65 items / hr

Run it with your numbers

  • Every input above is editable in the live Final Inspection Workload calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.