legrand01
Mechanical
- Jan 7, 2010
- 29
We have a drawing here from the mid 80's that doesn't reference any standards. On the drawing is a symbol I haven't seen before. The symbol is the letter G inside a triangle and it is applied to a couple of dimensions. The best guess I have is that they mean that the feature the dimension applies to must be ground, but you'd think (or at least I would think) that the G would be applied to the feature, not the dimension. Also the part is made from 416 SS, Rc 26-32 so it wouldn't really need grinding and there's no surface finish requirements defined. There are no similar callouts on the drawing. I've attached a portion of the drawing for reference.
Any ideas on what this callout really is?
Any ideas on what this callout really is?