The author remixed this model.
I used the original model to get the size, then I added:
The case is used for this project: https://www.eddmills.co.uk/building-a-plexamp-cd-barcode-scanner/
The OnShape model is also here if you want to make any adjustments: https://cad.onshape.com/documents/853e94427cbc25ee7eabf6e8/w/6e7163846b33d39a5c4b190d/e/12133f4a14b80eba051af5d4?renderMode=0&uiState=660c38d0c2fe376700d575bb