I would like to introduce an adapter for iPhone4 and my old Meopta Microscope (Made in Czechoslowakia). This is my first OpenSCAD design, so I apologize if there are mistakes in the code. This thing has two parts - iPhone holder and Ocular adapter. Holder dimensions are based on Case design guidelines from Apple https://developer.apple.com/resources/cases/Case-Design-Guidelines.pdf .
I intended to make an iPhone holder wit universal interface. It is possible to make and attach various adapters. This adapter is designed for Meopta Oculars with diameter 23.15mm. On microphotography is a hair folicule, 100x magnified.
Have fun with this and I would welcome your views.

Holder was make from PLA, layer 0.3mm, infill 20%.
Ocular adapter from black ABS, 0.3mm layer, infill 50%.
4x Screw M3 x 10mm.