therapy tool ergo Laserpointer hair hoop / Alice band

Hy there, 

Added one for a 15mm Laser pointer and one for a 16mm Laser pointer (Pearl)

I designed a hair hoop which fits a laser pointer.
my gf uses it as therapy tool for patients, they have to move their body accordantly without moving the point I think, or they have to move the point on a target in a specific way. 
People searching for such a thing know better than me how to use it ;) 

I also added a picture of the dimensions and a step file so you can fit it to other laser pointer types. 

You will need a 3mm Screw and a M3 brass melting insert to make it work (for fine adjustment) 

have fun and a great day !