A Geiger counter was a device used to measure radiation. When he was transported from 2020 to 2270, Shaun Christopher saw Spock holding a tricorder and believed it looked like a Geiger counter. (TOS novel: The Rings of Time) In 2366, Geordi La Forge compared the merger of his VISOR and a tricorder to a Geiger counter. (TNG episode: "The Enemy") External linksEdit Geiger counter article at Memory Alpha, the wiki for canon Star Trek. Geiger counter article at Wikipedia, the free encyclopedia. Retrieved from "https://memory-beta.fandom.com/wiki/Geiger_counter?oldid=382211" Categories: Technology Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.