How do I measure this datum location?

[QEng]

I have 6 cored holes with draft on bolt circle. 2 of them are datums B & C. The other 4 are toleranced as normal.
The 2 datum cores have a datum target point or points inside them, at a basic height off the Datum A face. (One core is round, the other oblong)
I am wondering how to measure the size of the cores - we usually just use a plug gage, but do I need to taper it for a go/no go at this line? (like a gauge line)? I can attach a print view of one.
Thank you!

[Kelly_Bramble]

Welcome to the EE!

It would be better if you posted an image of the geometry and dimensional specification.

[QEng]

Thanks for replying Kelly. That is the detail for this core. Only other place shown on the print is the main veiw showing the bolt circle.

[QEng]

I am new to the forum. Where you able to view the print detail of the core? I did attach it. I do not see it as attached, but it appeared I did it correctly

[QEng]

datum_core.jpgTried again, here it is!

[Kelly_Bramble]

QEng, to measure do one the following:

1) Use a micro-height or equivalent with the right length stylus to measure the size at the specified location. Then measure the angle - measure at several locations.

2) CMM - nothing more to say here, easy money.