It appears to be a gauge for a large POWER CELL, perhaps fueled by some type of nuclear reaction. If this is the case, it is relatively low on fuel. But who knows how long it has been running here?
You do not care about this sort of nonsense and you will disregard it at once. You are very hungry.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.