ID Chamfer Gauging Help

Hey gents, new here and hoping someone has already traveled the same path here. I'm trying to see if there is a gauge to check ID chamfer for a crosshole in tube stock. I know of a few tools to do this, but wasn't sure how to go about gauging it since it is a toleranced chamfer.....any help is appreciated. Also, any standard off the shelf gauging is preferred.

Can you give more details? Sizes and tolerances? Sketch showing the geometry and access to the chamfer?

Yeah, we have a range of parts, but it is turned tube steel with cross holes roughly a half inch in from each end. These parts get heat treated and ground after, best I can tell is that the chamfer is just feature present in the finished product so there isn't a sharp edge after grinding, but it is dimensioned in our print regadless at 15degrees plus/minus a degree on the id. I can access the part either through the drilled hole (0.340") or from the bore (approx 1-1/8" and up).

Well +-1 degree for a feature designed to soften an edge seems a little ridiculous but here are approaches I would take:
1. ask the designer why the tolerance.
2. If you get a bunch of BS ask the designer how to machine it and measure the chamfer.
3. if he plays the superiority game on you, request that he make a part.
4. If that fails, go ahead and make one and measure using the two ball method. if they insist on the tolerance.. Then make one at say +-5 degrees and measure with a facsimile material removed from the tube (think Playdough). explain the difference in time. If they still don't see the light, play your trump card--bring purchasing to the conversation and explain the difference in dollars and cents.

A good engineer will listen to your ideas and respect you for your insights. If they are a lousy engineer or complete a-hole you may be forced to play the game. Just make sure you are confident enough to play the game without being a jerk. Collaborating minds are fun and often yield superior results.

So, long story short, I would use spheres at +,-1 degree. Looser tolerances I would try the facsimile method.