BUYER RECEIVES 1 USED LUDLUM MODEL 3-98

 GEIGER COUNTER/SURVEY METER 

with 44-3 probe

Ludlum's Model 3-98 is uniquely configured to optimize measurements for 125I and any alpha, beta, or gamma contamination. The dual detector design allows the user to select the detector for the task at hand. The internally-housed GM pancake detector can be used to measure gamma. This detector's face can be exposed via a slide located along the bottom of the instrument, thus making it sensitive to alpha and beta as well. The external NaI detector, Ludlum Model 44-3, is optimized for low-energy gamma from 125I.

tested working

requires 2 D cell batteries not included