Film Badge Densitometer Densitometer Gamma Aerial Survey Instr. Gamma Underwater Instr. FS-11 FD-2 PRAM-5 Uw-l Eberline Instrument Co, Jordan Instrument Co. Riggs Electronics Eberline Instrument Co. Off-Site Gamma Background Monitor TN-4D Model by Evershed and Vignoles Ltd.) N. Y. Health and Safety Lab., USAEC (Recorder portion Mfg. Manufacturer 33 Eniwetok Bikini