Is this for a milling machine of was it used for a grinder?

[rmsflorida]

This Ebay seller has this dividing fixture too. Item #161182321280
Is this for a milling machine of was it used for a grinder?
I realize it could be used either machining operation.
Just need to know.
Robbie

 

[Bill C.]

This Ebay seller has this dividing fixture too. Item #161182321280
Is this for a milling machine of was it used for a grinder?
I realize it could be used either machining operation.
Just need to know.
Robbie

I would use it on a milling machine. Looks good to me, has extra indexing plates and collect closure. If it has a key slot on the bottom it will help setup. Good luck