The Central Territory Trace Office is a division of the Central Territory that monitors underage wizards who live in Muggle communities in order to supervise their magical activities. The CTTO is equipped with "a room full of crystal balls sitting on ... something like seismograph machines, with quills magically hovering over" cycling scrolls. When a quill marks a piece of parchment, a Clockwork golem tears off the scroll and crumples it into a ball which it them places into a tube that sends the wad of parchment to another department while another Clockwork replaces the scroll.