Read the passage from Exhalation by Ted Chiang One sect has dedicated itself to goal of reversing equalization pressure and found many adherents. The mechanicians among them constructed an?

The passage you provided is incomplete. It ends abruptly, leaving us with the question: "The mechanicians among them constructed an...?".

To understand what the mechanicians constructed, we need the rest of the sentence or paragraph.

Please provide the complete passage so I can give you a proper answer.