HOME > Technology > Measurement and Symbol of Surface Roughness

Type

Maximum Height of the Profile

Symbol

Rz

Description

The maximum height of the profile is the distance between the maximum peak height and the maximum valley depth from then mean line in each sampling length. Rz(ISO/JIS) is the mean value of the maximum peak-to-valley heights in the evaluation length.

Type

Arithmetic Mean Deviation of the Profile

Symbol

Ra

Description

The arithmetic mean deviation of the profile is the arithmetic mean of the absolute values of distances from the mean line to the profile.