IF your dimension only has a lower limit, then the NOMINAL is the upper limit. Hole size, for example, 10 -0.2 means the hole can be 9.8 to 10, the upper tolerance is zero.
IF your dimension only has a lower limit, then the NOMINAL is the upper limit. Hole size, for example, 10 -0.2 means the hole can be 9.8 to 10, the upper tolerance is zero.
I'm sure you're both right for knedi situation, but to play devil's advocate, how about a 1" wide slot with a full radius drawn on each ends and the radius dimension being something like R.25 MIN? In other words, the engineer doesn't want square corners, but doesn't need a full radius either.
edit to say
not such a good argument since the max would be .50
My instruction looks like the attachment.
Second position cylindrical area, the minimum is 0.25mm.
I put a maximum 2mm because it will never be bigger.
