Not matter how many time I have seen this I still don't really understand what they are asking for. I have a drawing with the callout of TRUE R.125. What does the TRUE mean?
From ASME Y14.5 2009:
1.8.2.3 True Radius. On a 2D orthographic drawing,
where a radius is dimensioned in a view that does
not show the true shape of the radius, TRUE is added
before the radius dimension. See Fig. 1-26. This practice
is applicable to other foreshortened features as well as
radii. See Fig. 4-28.
From ASME Y14.5 2009:
1.8.2.3 True Radius. On a 2D orthographic drawing,
where a radius is dimensioned in a view that does
not show the true shape of the radius, TRUE is added
before the radius dimension. See Fig. 1-26. This practice
is applicable to other foreshortened features as well as
radii. See Fig. 4-28.
