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.
PRICING
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.
CALIBRATION POINTS
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.
CERTIFICATE OF 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.
ACCURACY
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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