Laser collimator for aligning the mirrors in your Newtonian telescope.
6x #8-32 x1/4" long set screws
1x 1/4-20 x1/2" long thumb screw
Glue for the R/P parts
Laser Pointer <5mW - I used a $5 one that uses AAA batteries
Glue the two halves together, making sure the cylinders align. The holes in the top build are for 6 set screws used to align you laser pointer. They are the right diameter for a #8-32 tap. The large hole in the side is to press the laser pointer button, again, tap with a 1/4-20 tap.
If you laser pointer is a different design, you may need to drill and tap an alternate hole location to press the on button.
More information on my blog: