Built for NUCLEAR MEDICINE and other WIDE RANGE survey applications requiring a high range of 2000 mR/hr. In addition to the TBM-3 features, this survey meter utilizes an external end window (P-6A) probe, and an internal high range GM detector. The five LINEAR ranges are 0-0.2, 2, 20, 200, and 2000 mR/hr. The probe holder is designed to position the probe on the instrument while surveying using only one hand. This low cost survey meter comes complete with cable and NIST traceable calibration.