20th Century Electronics Type G.12 Geiger-Müller Tube
				  Tube compteur de rayonnement
				  Geiger-Müller Zählrohr
              Manufactured by • Fabriqué par • Hergestellt von : 20th Century Electronics (Centronic since 1978), Croydon, England.
              General-purpose tube for use with γ rays above 0.5 MeV
              Made: 1946-48
              Gas filling: argon (6.5 cm Hg)/ethyl formate (1 cm Hg)
              Recovery time: < 300 μs
              Operating voltage: 1300 V
               
			  
              Longueur • Length • Länge : 149 mm • 5" 7/8
              Diamètre • Diameter • Durchmesser : 23 mm • 7/8"
			  
			  
               
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