This meter is designed to meet nuclear medicine requirements. It is used in universities, power plants and regulatory facilities. This five range survey meter consists of one internal GM detector for gamma detection from 0-2000 mR/hr. It can be used with one or more external GM or scintillation detectors for alpha, beta, or gamma detection up to 0-200 mR/hr. Standard scale is 0-2 mR/hr with five counting ranges: x0.1, x1, x10, x100, and x1000. (Dual scale cpm & mR/hr on request). Two “D” cells provide over 200 hours of operation. The Model 14C is supplied as shown with built-in speaker.