Eyewear, Lenses & Vision Products worked example

Frame Assembly Labor at 23% adjustment and hardware allowance: a worked example

This scenario runs the frame assembly labor calculation on the strong side: 23% adjustment and hardware allowance, with every other input held at its documented default. an eyewear production manager needs labor hours for finished pair assembly

The inputs for this scenario

  • Finished pairs to assemble: 180 pairs (unchanged)
  • Frame assembly throughput: 30 pairs / hr (unchanged)
  • Adjustment and hardware allowance: 23 % (raised for this scenario; the documented default is 20)

Working through the calculation

  • Applying the documented formula (Base frame assembly hours = finished pairs to assemble รท frame assembly throughput) to the inputs above produces each figure below.
  • At this operating point the engine returns 7.38 hr for required frame assembly labor hours, the number this scenario is built around.
  • At this operating point the engine returns 6 hr for base frame assembly hours.
  • At this operating point the engine returns 23 % for adjustment and hardware allowance.
  • At this operating point the engine returns 30 pairs / hr for frame assembly throughput.

How this compares with the baseline

  • Against the tool's baseline example, where adjustment and hardware allowance sits at 20% and the headline result is 7.2 hr, this scenario comes in 2.5% above the baseline at 7.38 hr.
  • Use it when staffing the finishing bench for a shift, quoting completion time on a batch, or sizing how overtime affects a backlog. 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 frame assembly labor hours: 7.38 hr (headline result)
  • Base frame assembly hours: 6 hr
  • Adjustment and hardware allowance: 23 %
  • Frame assembly throughput: 30 pairs / hr

Run it with your numbers

  • Every input above is editable in the live Frame Assembly Labor calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.