The Ticking Thing is one of the King's Lost Things. It is a compass/clock/timer/lie detector/and any other handed device. The Ticking Thing has a wooden dragon top.
The Ticking Thing has loads of arrows that have many different functions such as: working as a compas, a clock & a lie ditector.
The Ticking Thing was owned formerly by Hiccup's great, great grandfather, Grimbeard The Ghastly. It was then presumably stolen by Norbert The Nutjob's father, Bigjob .