Interdimensional Portal

The Universe portal is some kind of machine hidden away in Stan Pines' secret underground laboratory.

History
The key to starting the machine is a complex algorithm that can only be completed by owning the journals 1, 2, and 3. Stan Pines has searched for 2 and 3 for an undetermined amount of time.

After Dipper and Mabel Pines defeat Gideon Gleeful's giant robot and Stan reveals Gideon for the fraud he is, Stan steals journal 2 from Gideon. Later, Dipper shares that he owns book 3 and Stan takes it on the pretense that fantasy books such as those were making his imagination run wild.

Stan takes the two books and combine them with journal 1, and inputs the data gathered from them into a large machine. This activates the portal.

Function
From what Dipper gathered from his section of the algorithm in book 3, it is some kind of strange, futuristic, super weapon. However, the cryptogram written on the page describes it as a portal that opens a gateway to infinite new worlds.

Appearance
The main section is a large, upside down, metal triangle with lights dotting along its edge. There is a large hole in the center and symbols encircling the hole. The symbols represent the Behenian fixed stars, which are a selection of fifteen stars considered especially useful for magical applications in medieval astrology. The bottom tip of the triangle is connected to a base with many large thick cords.