I bought this $7 60x jeweler's loupe on Amazon some time ago, and wanted to take iPhone photos through it. I also didn't want to have to remove my phone from its case every time I wanted to use it. This mount holds the loupe in position while being easy to put on and take off. (It turns out the field of view is pretty limited, but you can get an idea of the resulting photos from the images above of Roosevelt's face on a dime and some tweezer tips. Customizable so you can adapt it to your own needs/phone/case. Updated: lens positioning fudge factors were reversed, some default dimensions were adjusted. If you do not need to customize this, I suggest checking out my two part version, which requires gluing but puts the smooth bottom surfaces on the phone/case contact side, to prevent scuffing your case.The supplied STL is for an iPhone 5s with an Apple leather case and the loupe linked in the description. Other loupes/phones/cases can be made to work with some testing if you have calipers.