are these surface finish symbols an old industry standard?
are these surface finish symbols an old industry standard?
(OP)
I've seen this type of "f" symbol on drawings from at least 2 companies dating back to the 50s or even before.
Were they part of an actual "standard" once upon a time?
Were they part of an actual "standard" once upon a time?





RE: are these surface finish symbols an old industry standard?
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: are these surface finish symbols an old industry standard?