Point Helper is a 3ds Max script from Chuggnut that creates a point helper aligned to two selected vertices. It works directly from a vertex selection, turning the position of two verts into an aligned point helper in the scene.
The sequence is short. Select two verts and press the button, and the script creates a point helper aligned to them. Then set the axis set to "pick" and choose the point object. Those steps cover how the tool is used.
This entry is version 2.3.5 and is listed here as free, and it is available in the scriptspot library. For the download, current licensing terms, and the latest release details, Chuggnut's own page at chuggnut.com is the place to look.