Eberline RO-2A Ion Chamber is an industry standard Ion Chamber meter preferred by most Technicians.

• 4 Ranges 0-50mR/h, 0-500 mR/h, 0-5R/h & 0-50R/h 
• Retractable Beta Shield
• Rotary Switch for Off,  Batt 1 & 2 Check, & Zero
• Zero Adjustment

• Built In Audio with ON/Off Switch