Regression straight line (Gaussian straight line) Mean line laid through the measured profile such that the sum of the squares of all profile deviations is minimum.
(LSLI = Least Square Line)
Evaluation methods
DIN EN ISO 12180, 12181, 12780, 12781
Enveloping parallel lines Parallel, straight lines enclosing the measured profile and having the least separation.
(MZLI = Minimum Zone Line)
Regression circle (Gaussian circle)Circle laid through the measured polar profile such that the sum of the squares of all profile deviations is minimum.
(LSCI = Least Square Circle)
Circular zone with minimum radial separationConcentric circles enclosing the measuring polar profile and having the least radial separation.
(MZCi = Minimum Zone Circles)
Minimum circumscribed circle Smallest possible circle which can be fitted around the measured polar profile.
(MCCI = Minimum Circumscribed Circle)
Maximum inscribed circle Largest possible circle which can be fitted within the measured polar profile.
(MICI = Maximum Inscribed Circle)