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Ra equals 0.8 µm

Anonymous

∙ 10y ago

Updated: 12/22/2022

Ra is the roughness of the surface used in engineering. Mu(greek letter)metres is one millionth of a metre. To put in perspective glass would be around Ra 0.1, polished chrome plating would be around Ra 0.3 so Ra 0.8 is still fairly smooth but a dull finish. You would just be able to feel the surface with your fingernail.

Wiki User

∙ 10y ago

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Ra equals 0.8 µm

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Add your answer:

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