MicroMount - A universal phone adapter for Chinese microscopes (and works on modern phones too!)

MicroMount v1.0 - A universal phone to microscope adapter

- by loiphin © 2025

An easy to use, fit and forget phone adapter for Chinese microscopes.  I use it for watch repair, taking still photos, videos and slo-mo video for problem diagnosis.

Video quality is amazing. It absolutely destroys the supposedly 4K cameras you buy which are dedicated for trinocular microscopes. 

I have tested this on a iPhone 16 Pro Max, so I think pretty much any iPhone will work. I cant vouch for Android phones, but hopefully it should fit most phones.

The current adapter fits the WF10X/20 eyepiece found on popular Chinese microscopes. I am happy to make more adapters if you provide me with the specs.

Print the following:

1 x Frame

1 x Eyepiece Clamp (WF10X/20 only for now… let me know and I can create more  types)

3 x Phone Clamp

3 x Slide Nut 

The only hardware needed is:

M4 x 25 allen cap screws x 3 (Phone Clamps)

M4 x 40 allen cap or regular philips screws x 2 (Microscope Clamp)

M4 x 12 allen cap screw x 1 (Dovetail lock screw)

M4 nuts x 6

I printed it with 13% gyroid infill and 3 wall thickness in PETG. Plenty strong and rigid enough.

The only part that really needs support is the frame. The frame must be printed like so:

The phone clamp and slide nuts can be printed with or without supports. Slightly neater holes with supports.

Build

Build is fairly self explanatory. Use a 4mm drill bit to clean up the holes on the eyepiece clamp, and also a 7mm drill for the bigger holes. I used regular 4mm nuts, as I found nyloc nuts a pain.

The dovetail should fit snugly. If its too tight, dont force it! Just put a bit of  sandpaper on the  edge of a flat desk and sand off the dovetail on the frame a bit. 

The eyepiece clamp has a recess in it. That must face towards you (like in the picture below), and should fit snugly onto the WF10X eyepiece. 

Cailbration

(iPhone  only instructions) 

Attach the  MicroMount to your microscope. Place the phone in the mounts as shown below. 

You need to be in PHOTO mode. Turn OFF Macro, and leave the camera in 1X. 

Note that in different modes the camera uses different lenses, which are in different physical positions under the phone. So if you lose the image, its probably switched to another lens. 

Move the phone around until you get an image like this:

To get the height correct, start with having the dovetail recessed 5mm, in relation to the eyepiece clamp. That was the optimum height for my iPhone 16 Pro Max (with a silicone case).

Once you get a nice clear image like this, tighten the clamps, and then you can then use 2x mode to fill the screen. See the video example below. You shouldn't have to mess with it too much when you use it  next time. 

A video showing the footage: