surface finish

[brobinson]

looking for info on the heidelberg hatch system of surface finish, the symbols look like upside down triangles.
i am trying to convert it to microinches,micrometers or the "N" roughness grade numbers. i believe 3 triangles = 32 microinch finish. a chart would be helpful

 

[schlebb]

See response in ANSI

 

[SnowCrash]

Here is the home of the experts:

http://www.mel.nist.gov/div821/webdocs-13/821-13.htm

mailto:theodore.vorburger@nist.gov

Crashj 'did you google today?' Johnson