Measuring Runout of Two Internal Features

[bucknast]

Hi
I'm looking for a way to measure the runout between two internal features on a small, radially symmetric part. We currently measure runout from the OD to the ID and from OD to a c’bore, but the performance of the part is determined primarily by the runout between the ID and c’bore. These parts are cold formed on a 5-die progressive header, and the features of interest are not formed at the same die. Is there a type of indicator or fixture that might be able to help measure this?

Thanks!

 

[powerhound]

While runout is a perfectly valid callout for this part, you may want to consider a similar positional callout. Depending on the function of the part, functional gaging may be an acceptable alternative to checking runout. Can you elaborate more on how the part works?

Powerhound, GDTP S-0731
Engineering Technician
Inventor 2010
Mastercam X6
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II