Ludlum Model 3, Older version, BNC connection – CHP
Ludlum Model 3, Older version, BNC connection – CHP,Ludlum Model 3-98 I-125 Survey meter. Can pair with Model 44,Ludlum Model 3 In Test Equipment Radiation Detectors for,Ludlum Model 3 In Test Equipment Radiation Detectors for,Ludlum Model 3 In Test Equipment Radiation Detectors for