Those are definitely not PDP-8/e rack slides. I pulled mine out a
bit and took some pics:
http://www.neurotica.com/misc/pdp8e-rack-slides-1.jpg
http://www.neurotica.com/misc/pdp8e-rack-slides-2.jpg
Every rack-mounted PDP-8/e I've seen has had slides like this.
These slides were made by ChassisTrak.
Thanks Dave.
Now I know what I need to look for. They look pretty much like thinner
versions of what I've seen in a 11/70 and its peripherals.
Cheers,
Pontus.