Object
Thal Geiger Counter
A specialized radiation-measuring device used in Thal medical/safety contexts, distinct from Thal historical or strategic records.
5 appearances
Purpose
Detect and measure environmental radiation levels
Significance
Exposes the neutron bomb's aftermath, ignites fury over the Doctor's deception about the TARDIS fluid link, shatters group trust, and shifts focus from rescue and escape to frantic survival against radiation poisoning and Dalek captivity.
Appearances in the Narrative
When this object appears and how it's used