An anonymised, representative calibration scenario illustrating common risks in professional optical measurements.
Accessories in the shipment did not match the previous certificate.
Incoming inspection identified that the fibre and sphere interface differed from the documented configuration. Calibration was paused before measurements began.
Calibration results are only useful when the measurand, instrument configuration and later application match. A valid certificate for the wrong configuration does not control measurement risk.
The customer confirmed the intended configuration, preventing a technically valid but commercially useless certificate. The case highlights the importance of accessory identification.
