Quality & Metrology worked example

Inspection Time at 7.2% setup and handling allowance: a worked example

This worked example runs the inspection time numbers for a tougher week than the baseline: 7.2% setup and handling allowance instead of the typical 10%. Estimate the inspection time for a lot from the part count, inspection rate, and an allowance for setup and handling.

The inputs for this scenario

  • Parts to inspect: 120 parts (held at the documented default)
  • Inspection throughput rate: 12 parts / min (held at the documented default)
  • Setup and handling allowance: 7.2 % (the input this scenario stresses; the baseline uses 10)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base inspection time = parts to inspect รท inspection rate.
  • Required inspection time works out to 10.72 min at these inputs, and this is the headline figure for the scenario.
  • Base inspection time works out to 10 min at these inputs.
  • Setup and handling allowance applied works out to 7.2 % at these inputs.
  • Inspection rate works out to 12 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where setup and handling allowance sits at 10% and the headline result is 11 min, this scenario comes in 2.55% below the baseline at 10.72 min.
  • Use it when staffing an inspection station, quoting delivery lead time, or evaluating whether full inspection fits the takt time. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Required inspection time: 10.72 min (headline result)
  • Base inspection time: 10 min
  • Setup and handling allowance applied: 7.2 %
  • Inspection rate: 12 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Inspection Time calculator, set setup and handling allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.