Indicator holder for AXA toolpost

AXA toolpost holder for the [Shars indicator dial #303-3148](http://www.shars.com/125-dial-indicator-0005) made in collaboration with youtube creator [mrpete222.](https://www.youtube.com/channel/UCKLIIdKEpjAnn8E76KP7sQg)

Edit 4/2021: OXA tool post holder is actually the "plunger" version not the actual OXA dovetail. I will try to add the corrected file this summer if I have time, and I'll try to upload the original files as well.