Here are a FEW of the several surface roughness specs... to be aware of...
ASME B46.1 Surface Texture (Surface Roughness, Waviness, and Lay)
ASME Y14.36 Surface Texture Symbols
SAE J448 Surface Texture
SAE AS107 Surface Finish (RMS)
SAE AS291 Surface Texture, Roughness, Waviness and Lay
And for really ancient drawings/references... long superseded by ASME B46.1...
MIL-STD-10 SURFACE ROUGHNESS, WAVINESS AND LAY
AND for KISS guys like me, I constantly refer to surface roughness comparator gages to avoid shouting matches with machinists and mechanics about surface roughness quality...
Google 'surface roughness comparator gauges'
Regards, Wil Taylor
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