An Eberline, Model PAC-1SAGA, battery-operated, portable alpha-radiation-monitoring control unit. The unit, which measures 21 cm long by 9 cm wide by 19 cm high, consists of a metal box, which houses the battery pack and the electronics package, a meter and scale adjustments to indicate the count rates. A connection for external earphones is also supplied. Although labeled as an alpha detector, this counter unit could be operated for gamma-ray detection with an internal Geiger-tube or for alpha detection with an external, Type AC-3, scintillation detector, which could be connected through the high-voltage connector port. These units were manufactured by the Eberline Instrument Corporation in Santa Fe, New Mexico, and the were used by the Atomic Energy Control Board to investigate the contamination in tailings in the Port Hope, ON, area.
