Ab Gable attachment device 8 Special three-conductor steel armored cable A C Vent to pressure sensing element D 1.3-Volt mercury cells for pressure Cc ee, i \ “ \ sensing element \ il E Pressure- sensing element (Bourns Gage) F 1/4" Shelby tubing , 3" outside diometer D G High voltage battery pack, 680 volts DC E © H Low voltage battery pack, 6Ovolts OC F-———| — J Vocuum-tube pulse omoplifier K One . Geiger-Mueller tube 8S-2 Anton | \ (| SG J H LsEiight Geiger- Mueller tubes, E315 Anton M Removable waterproof sealing cap N Sensitivity selector switch A J LE eS K—= iH L M N Figure 2.2 Schematic diagram of underwater radiation detectors. 41

Select target paragraph3