The Prototype Time Jumper is an extremely early test TARDIS, before they were even dimensionally transcendental or called "TARDISes". They were only capable of a one way journey and were extremely dangerous as they had to be directly connected to the Untempered Schism, then operated from a seperate control centre next to it. It required two pilots to charge the engines for the one way jump, and one pilot at the control desk to set the time and location then initialise a jump.

Man I love the idea put into this! Seriously, a lot of people are going extra with this weeks tardis but you’re also seeing that simplicity is the key in this weeks interior challenge. Good job!

Ooh,  like the thought behind this