1MEASURING OBJECT: This Geiger counter tube can be used for measuring X rays, rays, and rays, which is convenient and practical. 2GLASS MATERIAL: The Geiger counter tube is made of excellent glass material, with high transparency and good corrosion resistance. 3FOR DIY PROJECTS: This glass Geiger counter is suitable for various nuclear radiation detection application, and suitable for DIY projects. 4COMPACT SIZE: The radiation detector tube is compact and lightweight, easy to install and carry, convenient to use anytime, anywhere. 5RELIABLE OPERATION: With fine workmanship and strict testing, this Geiger counter tube has stable performance, ensuring reliable operation. 1 x Geiger Counter