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This object exists primarily or exclusively within the Sonic Underground continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.

The Chaometer is an object that appears in Sonic Underground. It is a device used to seek out Chaos Emeralds.


The Chaometer is yellow device with two probes to detect energy and a gauge to indicate the strength of radiation. It has a red nozzle to adjust the device with. It can be used to located Chaos Emeralds or their energy, including the residue of Chaos energy where Chaos Emerald once was.[1]


  • The Chaometer works similar to a geiger counter, only instead of actual radiation, it detects Chaos energy.

See also


  1. Edens, Mark (1 October 1999). "Flying Fortress". Sonic Underground. Season 1. Episode 25. First-run syndication.

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