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About N.I.S.T. Traceable Calibration & Accuracy

Go to Stage Micrometers & Reticles

We can provide certificates of calibration with N.I.S.T. traceability (National Institute of Standards and Technology) on our line of stage micrometers and eyepiece reticles, as well as for Customer-supplied stage micrometers and reticles.

By calibration, we mean after the part is manufactured it is measured with a precision piece of equipment that has itself been calibrated with a N.I.S.T. traceable test standard. These measurement results are then provided with the part on a Certificate Of Calibration. The Calibration Department is ISO/IEC 17025:2017 accredited by an ILAC MRA recognized accreditation body.

Some of the stage micrometers are offered as standard products in a calibrated version with all division lines (points) calibrated, so please refer to the individual part number for pricing. For all other micrometers and reticles in our catalog the cost per part is $495.00 which includes 10 points (S-14910). Additional points are available for $49.50 each upon request. For non-catalog (custom) designs and Customer-supplied products the cost is $595.00 for 10 points (S-14912) and $59.50 for any additional points requested. We can also provide the same calibration for reticles.

A "point" is defined as one measurable dimension. For example, if you had a 1mm scale with sub-divisions every 0.1mm, and you wanted every division line to be calibrated, it would consist of 10 calibration points (0 ~ 0.1mm, 0 ~ 0.2mm, etc.). You could also specify different points. For example 0.1mm ~ 0.2mm or 0.1mm ~ 0.8mm, etc. If specific points are not requested the calibration will be spread evenly across the scale. Circle/dot/aperture type features count as two points each. We do not do angular calibration.

After calibration, the stage micrometer or reticle is shipped with a Certificate of Calibration showing the actual dimensions measured, calibration equipment used, calibration equipment accuracy, environmental conditions, N.I.S.T. traceable test number and certificate serial no. This serial no. is also engraved into the glass of the stage micrometer. The certificate will state that the Calibration Department is accredited to ISO/IEC 17025:2017, and meets the General requirements for the competence of testing and calibration laboratories.

The manufactured accuracy specification of the measurement features on our stage micrometers and reticles is +/- 0.0002" (+/- 0.005mm) end-to-end. If calibration is purchased, the calibration equipment has an overall accuracy of +/- 0.00002" (+/- 0.0005mm) with a total estimated uncertainty of +/- 0.00003" (+/- 0.0007mm). A tighter manufactured accuracy may be available on some parts for an additional cost.

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