FCF leader lines - is this legal by Y14.5?

[Wuzhee]

I've done this on many drawings when I worked with ISO but now I'm an ASME guy and never seen it this way.
Still doing it because it's easier on very simple parts.

 

[3DDave]

Nope. ASME doesn't have all the ISO bells and whistles.

 

[CheckerHater]

No, they don't do it in ASME; in fact, it is considered "former practice" in ISO as well since early 2000's at least

https://files.engineering.com/getfi...-960c-45f2-9e09-3543ac86c13c&file=Capture.PNG

"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future

 

[Wuzhee]

My old books referencing MSZ EN/MSZ ISO used these. Back then I did not have up-to-date info. It's still a valid method I think. I know putting Datum A on the shaft is not that hard, but still. What's the reason to reject it?