Camera Obscura Lens kit

This 3D print is a set of simple len aperatures and a lens holder. If you are not sure what a "Camera Obscura" is. This is where you make an entire room in your house into a camera. You should be able to project the image from outside onto the wall on the opposite side, For a better expalaination go to this website ; https://blackcreek.ca/how-to-make-your-own-camera-obscura/ ..
Anyway, there are several files. One is a holder that you tape to your window and the others are several different sized lens aperatures to accomodate different sized rooms..