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Guide │ Technical Referance
Traceability
All products produced by Sigma Koki are inspected with valid metrology instruments that have supporting traceability.
Instruments and supporting equipment in our metrology department are calibrated by their respective manufacturers or certified laboratories.
Our maintenance program ensures that the level of accuracy is always at optimum levels.
It is possible to request for a Calibration Inspection Certificate for the metrology instrument used against any of our products inspected.
(Please note that that will be a small fee for this request)
| Nspecting Machine | Manufacture | Inspecting Item |
| Interferometer | ZYGO CORPORATION |
Reflecting Wavefront Accuracy, Transmitting Wavefront Accuracy (Up to φ150mm) |
| Auto-collimator | NIKON CORP. | Parallelism (within 30arcmin) |
| Spectrophotometer | HITACHI LTD | Transmittance |
Traceability System of Interferometer
Traceability System of Auto-collimator
Traceability System of Spectrophotometer
