Renishaw Equator Gauge Checker, User Manual

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14
3
2D Distance:
√
2(2
2
) + 2(2
2
) = ± 4.000 µm
4
3D Distance:
√
3(2
2
) + 3(2
2
) = ± 4.899 µm
5
Form error (non-freeform curves): test limits evaluated using
empirical measurements (for further information, please contact
Renishaw).
6
Freeform curve deviation: test limits evaluated using empirical
measurements (for further information, please contact
Renishaw).
†
Measurement uncertainty is defined in the GUM (Guide to the
expression of Uncertainty in Measurement) as: “a parameter,
associated with the result of a measurement that characterizes
the dispersion of the values that could reasonably be attributed
to the measurand”.
4.2 Compare procedure
Gauge Checker will give a pass/fail for each type of
measurement. Namely: position, diameter, 1D, 2D, 3D distances,
free-form profile* and sphericity.
*Not Touch Trigger.
Some of the features that are inspected are shown below.
Technical data