Pocket Size Exposure A/B/G Ratemeter - Model 2401-EW
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Introduction

The Model 2401-EW instrument is a general purpose, pocket size radiation detection meter that employs an end-window type GM detector. The detector is conveniently packaged inside the instrument, with a protective screen covering located along the middle of the top end of the instrument. The meter presents two scales: CPM for contamination measurements, and mR/hr for exposure rate.