The jig in real life, printed in white PETG. A faceplate PCB sits in the bottom half, and a display sits upside-down in the jutting-out holder to the side, flexible PCB in the air, contacts in line with the pads on the PCB.
https://assets.chaos.social/media_attachments/files/113/215/234/393/363/040/original/64295a7082c97b7d.jpeg