Reflecta ProScan 135 film holder

A film strip holder to scan four image 135 (standard 35 mm) film strips with a [Reflecta ProScan](https://reflecta.de/en/products/detail/~id.734~nm.69/reflecta-ProScan-10T.html) cheap-compared-to-drum-scanners film scanner i own. This should fit both the 10T and 7200 models.

I already have two original [Reflecta holders](https://reflecta.de/en/products/detail/~id.740/Filmholder-ProScan-10T--ProScan-7200.html) for this, so i didn’t print this. This was just a logical step in adapting my Minox