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True Position of holes, without Diameter symbol in Control Box??

SAM-IMC
let me lay this out for you guys and gals the best I can:

I have Datum A wich is a inside Circle recessed into the top of the part. We will call this "Datum A"

I have another recessed circle on the bottom of the part. We will call this "Hole"

"Hole" has a dimension callout that reads as follows: Dia. 7.06"
[T.P./.010/A] Notice there's no Dia. Symbol in the Cntrl Frame

I have never seen this callout before without the Dia. Symbol in the control frame when in reference to a datum that is a circle or cylinder, have you?

If I run this with both features as Circles, I get a measurment of 0 (ZERO)

If I run this with both features as Cylinders, I get some actual numbers, but I don't know if they are correct.

If I run this with Datum A as a Cylinder and Hole as a Circle, I get 0(ZERO)

I am confused as to which way i am supposed to do this. Is the callout on the drawing messed up, or am I giving Pcdemon incorrect features to calc this dimension?

Any help would be greatly appreciated.

Sam
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  • I cannot upload the drawing for certain reasons, but if you will imagine looking at the part from the top, you would see datum A as a circle and "Hole" would also be a circle inside of Datum A. Just like a concentricity symbol. There are other features that have this same TP Control Box that looking from the top of the part are other circular features that actually overlap Datum A by being slid in the Y axis, but not in the X axis.

    I picked the Hole in the bottom of the part because it was simplest to describe. but being a raw casting... I know that I would never get a TP with a measurment of 0(ZERO).

    Sam

    So there are no basic dimensions locating the "hole" and the only datum in the FCF is A. I would say most likely there should be a Ø in the FCF and it was left out by mistake.

    Do the other circular features have the Ø symbol in their FCFs?

    Do they have any basic dimensions?

    Do they have any other datums in their FCFs or just A?
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  • I cannot upload the drawing for certain reasons, but if you will imagine looking at the part from the top, you would see datum A as a circle and "Hole" would also be a circle inside of Datum A. Just like a concentricity symbol. There are other features that have this same TP Control Box that looking from the top of the part are other circular features that actually overlap Datum A by being slid in the Y axis, but not in the X axis.

    I picked the Hole in the bottom of the part because it was simplest to describe. but being a raw casting... I know that I would never get a TP with a measurment of 0(ZERO).

    Sam

    So there are no basic dimensions locating the "hole" and the only datum in the FCF is A. I would say most likely there should be a Ø in the FCF and it was left out by mistake.

    Do the other circular features have the Ø symbol in their FCFs?

    Do they have any basic dimensions?

    Do they have any other datums in their FCFs or just A?
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