Screen holder in optics/laser lab

When people working in a optics/laser lab. They always need to do beam alignment and observe the result with a name card or IR view card. It could be neat if the card can stand on it own. It can make the alignment easier. And It could also hold a screen/card for people to observe the image from lens/objectives.

This one can be mounted directly to the top of an optical post with M4(8-32) screw. And with a Foldback Clip, you can easily attach different card/screen.

The Solidworks file was cr