If we're on the Apparatus (which is independent, and thus a Construct not an item) here are my notes on it:
OK, onto the Apparatus of Dreadful Construction:
Seems to be a Gargantuan Construct (about 80 HD)
Speed should be 20, but it should have to slow right down to swallow stuff.
AC around 35, but Touch AC of 5 or so.
DR 20/adamantine or epic
Str 50, Dex 7, Con 0, Int 0, Wis 4, Cha 1
Has the iron golem's magic immunity.
Special Attack: Swallow (Ex) If it moves over an opponent of Huge or smaller size, it may swallow them. They may either make an AoO, or take a DC25 Reflex save to get out of the way. If engulfed, they take 20d6 points of fire damage and 20d6 points of crushing damage per round due to the action of the machinery. They are inside the Apparatus for d3+3 rounds. Anything else (such as items) which is engulfed suffers the same fate.
Special Ability: Make Road (Ex) All squares that the apparatus moves through become a perfectly surfaced road. This road looks glassy, but the surface is not slippery. Anything that went through the apparatus and was not destroyed appears embedded in the road d6 inches down (the road surface is 6 inches thick, has 12 hp per inch and hardness 8)
The Apparatus can also be used to make building blocks of any size up to 6ftx3ftx3ft out of the same glassy material. These blocks are deposited at the rear of the machine.