Scintillation counter
Scintillation counter, type N664A, by Ekco Electronics Ltd., English, 1955-1970
Scintillation counter, type N664A, by Ekco Electronics Ltd., English, 1955-1970
Scintillation counter, type N664A, by Ekco Electronics Ltd., English, 1955-1970
Round lead castle, type N662 from Scintillation counter, by Ekco Electronics Ltd., English, 1955-1970