Arm for DIY Stereo Microscope

This arm is specifically designed for this microscope.
https://www.thingiverse.com/thing:7311347

I made a stereo microscope to attach to a smartphone arm, but realized that a free arm wasn't necessary because the focal length was fixed. Free arms also have many moving parts, which can cause them to wobble, so I created a dedicated arm with as few moving parts as possible.
It can be disassembled when not in use.

The bolts are printed with 100% infill.
I used a "Pole for standing hanger rack" from Daiso for the arm. This is a 16mm diameter steel pipe.
The vertical pipe needs to be 220mm long. The horizontal pipe can be any length.
The desk top thickness can be up to 28mm. I've also uploaded the AUTODESK Fusion file, so please adjust it as necessary.

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DIY実体顕微鏡専用アーム

これはこちらの顕微鏡専用のアームです。
https://www.thingiverse.com/thing:7311347

・スマホ用アームに取り付ける実体顕微鏡をDIYしましたが、焦点距離が固定なのでフリーアームの必要はないという事に気付きました。またフリーアームは可動部分が多く、ぐ