Inductive Gauge
A type of transducer for converting the movements of the stylus into electrical signals. An inductive transducer employs the very small movements of the stylus to move an armature between two coils to change their relative electrical inductance. The amplitude and direction of these changes provide the output from the gauge.
Interferometric Gauge
The application of interferometery to a gauging system (application of light wave interference phenomena for measurement purposes).
Isotropic Surface
A surface having no directional lay – no obvious pattern direction, grinding for example.
