Monitors and Dosimeters
Applied Techniques, Arrow Tech, Atomtex, Automess, Aware Electronics, Berthold Technologies, Black Cat Systems, BNC, Bull electrical, Direct Scientific
Research and Industrial
Alpha Counting, Alrad Electronics, Amale, Amptek, Bicron, BNFL Instruments, Canberra Industries, Carroll and Ramsey Associates, Centronic, CERN gas detectors