How root mean square (Rq) and maximum peak to valley (Rz) values contributing surface measurement apart from average surface roughness (Ra) ?

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Daniel Martinez Krahmer

Hi Munish.

You can obtain equal Ra values with differents roughness profile. For me is better analyze a surface with two parameters like Ra and Rz, than only one parameter.

Munish Gupta

Can u please explain it sir?

Attach is an example.

Very different profile with the same Ra value. May be you can add an horizontal roughness parameter like Sm.