The Geiger counter, also known as the Geiger-Mueller counter, is an electrical device that detects various types of ionizing radiation. This device is named after the two physicists who invented the counter in 1928.
Geiger Counter - Geiger-Mueller Detector
Geiger counter - Wikipedia
Geiger-Müller Counter Tube - 1001035 - U8533430 - Radioactivity - 3B Scientific
Geiger counter - Stock Image - C023/4009 - Science Photo Library
Geiger-Mueller Counter tube, 45 mm
Geiger–Müller tube - Wikipedia
【High precision & High Sensitivity】Adopts energy compensated GM counter tube as the detector, small errors<5% (at 1mSv / h) and high accuracy of 0.01
Geiger Counter Nuclear Radiation Detector, Handheld Nuclear Radiation Detector Alarm Device Portable Digital Meter High Sensitivity
The Geiger Counter
Geiger Counter, Radioactivity, Radiation, Nuclear Energy
Geiger Counters ADM Nuclear Technologies